Deuteronomy 6:4 — Shema Israel: the One God is the Father

“Hear, O Israel: the LORD our God, the LORD is one.”

Deuteronomy 6:4

Context

Deuteronomy 6 stands at the heart of the Mosaic covenant proclamation. On the eve of the entry into the promised land, Moses sets before the second generation the chief commandment: Israel is to love YHWH alone and to know him as their one God. Verses 4–9 later become the “Shema” in Judaism and remain to this day the daily obligatory prayer (morning and evening).

The verse is the exegetical foundation of all other monotheistic confessional passages: Deut 4:35,39; 32:39; 1 Sam 2:2; Isa 44:6; 45:5–7,21–22; Mal 2:10. If Deut 6:4 is re-read trinitarianly, all parallel passages must be re-read with it — an intervention of great weight.

Historical-critical scholarship sees the verse as the latest consolidation of Jewish monotheism, inscribed in a period in which Israel clearly demarcated itself against the polytheism of its neighbours. Theologically it is not the trinitarian dispute of inner-Christian schools that is being negotiated here, but the demarcation against polytheism.

In the New Testament, Jesus himself cites this verse word for word (Mark 12:29) as the greatest commandment — without any trinitarian extension. The scribe summarises: “He is one, and there is no other besides him” (Mark 12:32). Jesus praises this answer. For the right understanding of Deuteronomy 6:4 this NT confirmation is the exegetically decisive datum.

Paul takes it up: “For us there is one God, the Father, from whom are all things” (1 Cor 8:6); “there is one God and Father of all” (Eph 4:6); “there is one God, and one mediator between God and men, the man Christ Jesus” (1 Tim 2:5). The NT identification is consistent: the one God of the Shema is the Father — and Christ is his sent mediator, not a second person of this one God.

Socinian core thesis

Socinianly, Deuteronomy 6:4 is the hermeneutic key statement of the whole doctrine of God. Whatever Scripture and tradition say about Christ, about the Holy Spirit, about the order of salvation, must be spoken within the grammar of this verse. The one God is numerically one, not subsisting in three persons.

The ecclesiastical doctrine of the Trinity (Nicaea 325, Constantinople 381) joins together two statements that are not contained in Deuteronomy 6:4: first, that the one God subsists in three persons; second, that these three persons are consubstantial. Both statements are philosophical-speculative, not derivable by biblical exegesis. The Racovian Catechism (1605) devotes several chapters to refuting them.

The Shema does not introduce an abstract “God,” but the living YHWH of Israel as “our God.” This concreteness is preserved in the NT: this YHWH is the Father of Jesus Christ (Matt 11:25; John 17:3; 1 Cor 8:6). That is no reduction, but a precise rendering of the relationship to God.

When Jesus himself cites the Shema as the highest commandment (Mark 12:29), he confesses a God beside himself: “My Father is greater than I” (John 14:28); “you, the only true God” (John 17:3, addressed to the Father); “I am ascending to my Father and your Father, to my God and your God” (John 20:17). These self-statements of Jesus are only with difficulty readable in a trinitarian frame; in the Shema frame they are self-evident.

The Socinian reading is therefore no late subtlety, but a restitution of the biblical first principle: one God, the Father — one Lord, Jesus Christ, the Son (1 Cor 8:6). Father and Son are not two persons of one divine substance, but one Person of God and one person of his sent and anointed Son.

Exegesis: key terms and semantic field

Five linguistic-philological points carry the interpretation of Deuteronomy 6:4:

Shema — “Hear” as a confessional call

The Hebrew shema' (to hear) is in Deuteronomy not mere acoustic perception, but active, obedient reception of the covenant revelation (cf. Deut 4:1; 5:1; 27:9). Israel is addressed as the subject of hearing; the confession is a response to God's self-revelation, not a philosophical speculation about his essence.

The imperative addresses the whole assembled congregation. The confession is communal (“our God”), not individually-speculative. Every attempt to look “into the inner essence of God” beyond the biblical usage bursts this communal-confessional frame.

For NT proclamation this remains normative: the “you” whom Jesus, Paul and the apostles address hears the Shema in the same hearership in which Israel was placed. Whoever says “Shema” has entered the biblical space of faith.

YHWH — the proper name of God

The Tetragrammaton YHWH is the proper name of the God of Israel (Exod 3:14–15). It denotes a concrete, individual person, not a generic divine nature. Whoever says “YHWH” does not mean an essential deity in which several persons might share, but the living, speaking, acting God of Abraham, Isaac and Jacob.

The Septuagint translates YHWH throughout with kyrios (Lord). The NT applies the same vocabulary to Jesus — and precisely here the trinitarian inference sets in. Yet the NT texts themselves show the distinction: in 1 Cor 8:6, theos (God) is referred only to the Father, kyrios on the other hand to Christ. The apostle thus carefully distributes the two kyrios-applications drawn from the Shema: theos = the Father, kyrios = the Son (compare the excellent analysis in the Racovian Catechism on Acts 20:28).

Thereby it is clear: NT usage does not extend the Shema trinitarianly, but interprets the Shema-predicates (theos, kyrios) as Father-Son predicates, where the Son has received the kyrios-dignity as conferred from God (Phil 2:9–11; Acts 2:36).

'echad — cardinal one, not compound unity

'echad simply means “one” in the numerical sense. It counts: one day (Gen 1:5), one man (Gen 2:24, “they shall become one flesh”), one people (Gen 11:6), one angel (Dan 10:13). In none of these cases does 'echad mean “one in several persons.” Even in Gen 2:24 the becoming-two-into-one of the married couple is a figurative statement about covenantal union — not the creation of an ontologically composite person.

The apologetic thesis, invented in the 19th century, that 'echad designates a “compound unity” over against the absolute yachid (only) is linguistically untenable. Both Moses Maimonides (12th c.) and modern Hebraistic scholarship make it clear: 'echad is the normal counting one. Yachid is not stronger but means “only, unique” in a different semantic field (e.g., Isaac as Abraham's yachid, even though Ishmael also lives — Gen 22:2,12,16).

The Racovian Catechism makes precise: the essence of God is one, “not in kind, but in number.” Numerical unity excludes several intra-divine persons: a counted-one cannot also be three, otherwise three essences would have to be counted.

'elohênû — “our God” in the plural?

The form 'elohênû is a possessive-suffix plural of 'elohim. The word 'elohim is morphologically a plural, yet syntactically connected regularly with a singular verb when the God of Israel is meant (cf. Gen 1:1: “bara [sg.] 'elohim”). This is pluralis maiestatis or pluralis intensitatis — a stylistic device of dignity-intensification widespread in Hebrew.

Whoever wants to derive a personal plural within the deity from the plural 'elohim would, consistently, also have to read “waters” (mayim, likewise plural) as “several water-persons,” “heavens” (shamayim) as “several heaven-persons,” “life” (chayyim) as “several life-persons.” That is absurd. Hebrew grammar knows morphological plurals that are semantically singular.

Pagan gods are also denoted with 'elohim (1 Kgs 11:33: 'elohim of the Sidonians — Astarte; 1 Sam 5:7: 'elohim of the Philistines — Dagon). No one would conclude from such evidence that Astarte or Dagon are each “three in one deity.” The grammar simply does not bear a trinitarian inference.

The monos-structure in the NT: 1 Tim 1:17; 6:15–16; John 5:44; 17:3

The NT uses monos (alone, only) exclusively of the Father: “to the only wise God” (1 Tim 1:17; cf. Jude 25); “who alone has immortality” (1 Tim 6:16); “the only true God” (John 17:3); “the glory that comes from the only God” (John 5:44).

These monos-predicates converge with the 'echad of the Shema. When Christ calls the Father “the only true God” (John 17:3) and distinguishes himself from him (“and Jesus Christ whom you have sent”), he sets the Father as the subject of the Shema; not himself.

The NT monos-passages are therefore not side passages, but bridges: they identify exactly the one God of the Shema as the Father of Jesus Christ — and nothing beyond that.

Comparison of interpretations

Reference to Fausto Sozzini

The Racovian Catechism (1605, the main theological document of the Polish Brethren on Sozzini's foundation) devotes the exegetical key-place of its doctrine of God to the Shema. The Shema and its parallels (Deut 32:39; 1 Cor 8:4–6; 1 Tim 2:5; Eph 4:6; Gal 3:20) are the foundational passages from which all further statements must be derivable.

If we did not believe that God is only one, we would be compelled to worship several… Therefore the Scripture frequently exhorts us on this matter, that God is one, as is to be seen in Moses (Deut 6:4), which the Lord himself also repeats in Mark (Mark 12:29): “Hear, O Israel, the Lord your God is one God.” — The essence of God is one, not in kind, but in number. Therefore there cannot in any way be in him several persons numerically distinct, since it is one and the same indivisible thinking essence.

Fausto Sozzini, First Book, On the Knowledge of God, Chap. 1 / Chap. on the Doctrine of the Three Persons

The Catechism argues in two steps. First: the Shema does not merely say “there is one God,” but “God is one” — a statement about the inner determination of the deity, not only about its quantity. If God is one, he cannot at the same time be three; that would be contradictory.

Second: the essence of God is one not specie (in kind), as if three men shared the common essence “man,” but numero (in number) — one and the same individual, indivisible thinking essence. From this premise it follows necessarily that only one person of this essence exists, because every additional person would introduce an additional essence.

Thirdly, the Catechism identifies the one person of this one essence directly with the Father of Jesus Christ: “This is eternal life, that they know you, Father, the only true God” (John 17:3); “for us there is one God, the Father” (1 Cor 8:6); “one God and Father of all” (Eph 4:6). With that, the Socinian position is developed directly from NT usage — not speculatively reconstructed.

The Catechism finally points out that the doctrine of the Trinity stands in evident contradiction: on the one hand one essence, on the other three persons, each of them God. Whoever counts three cannot without logical breakdown also count only one. Thereby the ecclesiastical doctrine fails to achieve what it claims to teach: the Shema.

Overview of Sozzini's writings

Logical arguments

From the Shema and its echo throughout the whole NT, the following linguistic-philological and theological arguments arise:

1. Argument from the wording. Deuteronomy 6:4 says simply “one” ('echad). A compound or “trinitarian” unity is not contained in the wording; it would have to be grounded by later writings first. But the NT writings do precisely not provide this: they always identify the one God of the Shema with the Father (1 Cor 8:6; John 17:3; Eph 4:6).
2. Argument from Jesus' own interpretation. Mark 12:29 shows Jesus citing the Shema literally — without trinitarian extension. The scribe summarises: “He is one, and there is no other besides him” (v. 32). Jesus praises this answer. If Jesus himself confirms the strict monotheistic reading, a later inner-Christian re-interpretation is exegetically indefensible.
3. Argument from 1 Corinthians 8:6. Paul cites the Shema and distributes its two predicates: theos (God) refers to the Father, kyrios (Lord) to Christ. The Father alone is called “God,” the Son “Lord.” A trinitarian reading would have attributed theos to the Son as well — but does not.
4. Argument from John 17:3. Christ himself calls the Father “the only true God” and is distinguished from him — “and Jesus Christ whom you have sent.” Monos is linguistically exclusive: no one besides the Father is “true God” in the same sense. A trinitarian reading must attenuate this exclusive statement.
5. Argument from 1 Timothy 2:5. “One God and one mediator between God and men, the man Christ Jesus.” The distinction between theos and mesitês is not intra-divine, but between God and man (anthrôpos Christós Iêsous). Christ is here the man-mediator, not a second person of the one God.
6. Argument from Ephesians 4:6. “One God and Father of all, who is over all and through all and in all.” The identification of the one God with the Father is explicit; the ecclesiological unity follows from this theological foundation. A trinitarian reading would have had the ideal place here for unfolding — but it does not unfold it.
7. Argument from the 'echad-usage. Whoever reads 'echad in Deuteronomy 6:4 differently than in Gen 1:5; 2:24; Dan 10:13 and hundreds of other passages, pursues a special hermeneutic. Lexical consistency requires: 'echad is cardinal one; that holds here as well.
8. Argument from Jewish tradition. Israel has understood the Shema for 3000 years as strict monotheism. Jesus, Paul, the apostles and the first congregations also shared this understanding. The trinitarian reinterpretation begins only with post-apostolic apologetics (2nd–3rd c.) and becomes ecclesiastically binding only at the councils of Nicaea (325) and Constantinople (381).
9. Argument from the monos-predicate. The NT designates the Father at key passages as “the only true God,” “the only wise God,” “the only immortal one” (John 5:44; 17:3; 1 Tim 1:17; 6:16). The monos-predicates are exclusive: they exclude every other person from the predication. They are nowhere attributed to the Son.
10. Argument from hermeneutic priority. Clear passages interpret obscure ones, not the reverse. Deuteronomy 6:4 is, in its monotheistic statement, as clear as hardly any other passage. Less clear passages (John 1:1; John 20:28; Phil 2:6 etc.) are to be read in its light — not the Shema in theirs.

Biblical cross-references

The following passages support the strict monotheistic reading of Deuteronomy 6:4:

Deuteronomy 4:35,39 — exclusive reaffirmation

“To you it was shown, that you might know that the LORD is God; there is no other besides him” (v. 35); “he is God in heaven above and on the earth beneath; there is no other” (v. 39). The formula “there is no other” ('en 'od) makes the statement unambiguously exclusive.

A trinitarian reading would have to read “no other” as “no other essence” — while at the same time claiming the one God consists of three persons. The distinction between “essence” and “persons” is a speculative postulate which the biblical text itself does not make.

Deuteronomy 32:39 — the “I am alone”

“See now that I, even I, am he, and there is no god beside me.” 'ani (I) is the self-designation of the one God — a 1st-person-singular statement. YHWH does not here speak in “we”-form, but as the one speaker.

The Racovian Catechism cites this passage directly following Deuteronomy 6:4 and shows: the monotheistic statement of the OT is not an isolated passage, but a continuous motif.

Mark 12:29–32 — Jesus' confirmation

Jesus cites the Shema as the highest commandment. The scribe confirms: “He is one, and there is no other besides him” (v. 32). Jesus praises him: “You are not far from the kingdom of God” (v. 34).

The scene is exegetically decisive: Christ here would have had the opportunity for trinitarian precision; he does not use it. Instead, he confirms the strict monotheistic reading as that which is “closest to the kingdom of God.”

1 Corinthians 8:4–6 — one God, one Lord

“There is no God but one” (v. 4); “for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ, through whom are all things and through whom we exist” (v. 6).

Paul differentiates: theos the Father — kyrios the Son. The Father is the one from whom all is (First Cause); the Son is the one through whom all is (mediation). The Racovian Catechism draws the same distinction for the ecclesiological location of the worship of Christ.

1 Timothy 2:5 — one God, one mediator-man

“There is one God, and one mediator between God and men, the man Christ Jesus.” The distinction is between God and man (anthrôpos) — explicitly not between two persons of one deity.

Cf. the entry on 1 Timothy 2:5: Christ is presented as the man-mediator. A trinitarian reading would have to read the verse against its own wording.

Ephesians 4:6 — one God and Father of all

“One God and Father of all, who is over all and through all and in all.” In the same breath Paul names “one Lord, one faith, one baptism” (v. 5). The series is not trinitarianly ordered (Father-Son-Spirit), but ecclesiologically: one faith, one baptism, one Lord, one God and Father — a hierarchy of reference.

John 17:3 — the only true God

“This is eternal life, that they know you, the only true God, and Jesus Christ whom you have sent.” Christ himself is speaking. He predicates monos (alone) alêthinos theos (true God) exclusively of the Father — and distinguishes himself from him as “the one whom you have sent.”

Cf. the entry on John 17:3: there the exegetical weight is unfolded.

John 20:17 — my God and your God

“I am ascending to my Father and your Father, to my God and your God.” Even after the resurrection Christ predicates the Father as his God. A homoousian consubstantiality is not compatible with this self-statement.

Cf. the entry on John 20:17.

Malachi 2:10 — one Father, one God

“Have we not all one Father? Has not one God created us?” The identification Father = God is already laid out in the OT. The NT unfolds that this Father is the Father of Jesus Christ.

Objections and Socinian answers

Objection 1: “But 'echad means ‘compound unity’ — as in Gen 2:24, where man and wife become ‘one flesh’!”

This thesis is linguistically false. 'echad is the normal counting one. In Gen 2:24, the phrase “they shall become one flesh” is a figurative statement about the covenantal and life-union of the married couple — not an ontological creation of a composite person. “One flesh” does not produce a new third entity; man and wife remain numerically two.

The Hebrew usage of 'echad is otherwise entirely unremarkable: one day (Gen 1:5), one angel (Dan 10:13), one man (1 Sam 1:1), one king (1 Kgs 4:19), one people (Gen 11:6). In none of these cases does 'echad denote “one in several persons.” The special reading for Deuteronomy 6:4 is a late apologetic construction without textual basis.

Hebrew yachid (only) is also not a stronger synonym which would have been expected in place of 'echad in Deuteronomy 6:4. Yachid means “only, unique” in a different semantic field — e.g., Isaac as Abraham's “only” beloved son (Gen 22:2), although Ishmael also lives. 'Echad is therefore not “less absolute” than yachid; both terms have different fields.

Moses Maimonides (12th c.) and the entire Jewish tradition of interpretation read 'echad in Deuteronomy 6:4 strictly numerically. If the whole linguistic community has read the text for 3000 years as strict monotheism, the thesis of a “compound unity” would be a violent hermeneutical intervention — and indeed it begins only in 19th-century Christian apologetics.

Objection 2: “But 'elohim is a plural — that is a hint at several persons!”

'Elohim is morphologically a plural, but syntactically connected regularly with a singular verb when the one God of Israel is meant. Already the first verse of the Bible shows it: bere'shit bara' 'elohim, “In the beginning God created [singular].” Whoever scents a personal plural here would have to count the verb (singular) as a grammatical error.

Hebrew grammar knows numerous plurals that are semantically singular: mayim (water), shamayim (heaven), chayyim (life), panim (face). From “chayyim” it does not follow that “life” subsists in several persons. It is a pluralis intensitatis (a plural of dignity/intensity).

'Elohim is also used of individual heathen gods: 1 Kgs 11:33 calls Astarte the 'elohim of the Sidonians; 1 Sam 5:7 calls Dagon the 'elohim of the Philistines. No one would conclude from these passages that Astarte or Dagon are each “three in one deity.” The grammar simply does not bear a trinitarian inference.

If, finally, 'elohim in Deuteronomy 6:4 were read trinitarianly, the following statement “'echad” (one) would have to refer to these three — and that would mean: three are one in the cardinal one. Exactly this is the contradictio in adjecto which the Racovian Catechism exposes.

Objection 3: “But in the NT Christ is called ‘God’ — e.g., John 1:1; John 20:28; Rom 9:5!”

These three passages are dealt with extensively in the Racovian Catechism. John 1:1 says “the Word was God” (theos ên ho logos) — without article before theos, in contrast to “the Word was with God” (pros ton theon). This construction is consistent in the NT: ho theos with article = the Father; theos without article can also be used in the wider sense of divinity, power or majesty.

John 20:28 (Thomas: “my Lord and my God”) is a statement of faith in which Thomas acknowledges the post-resurrection sovereign position of Christ. The Racovian Catechism shows: Christ is to be worshipped as Lord and King appointed by God — and this can be expressed with divine predicates without Christ being identified with the one God. That is the logic of Acts 2:36: “God made him both Lord and Christ.”

Rom 9:5 is text-critically and syntactically disputed. More likely than “Christ, who is over all, God” is the reading “Christ according to the flesh. God who is over all be blessed forever” — a doxological close which praises the Father. Even the NA28 edition leaves the punctuation open.

But above all: none of these verses forces the construction “three persons in one deity.” They show at most that Christ may be honoured with divine predicates — which is Socinianly uncontested (he is appointed by God as Lord and Judge). The trinitarian construction remains a later philosophical addition.

Objection 4: “But Matt 28:19 speaks of the ‘name of the Father and of the Son and of the Holy Spirit’!”

The baptismal formula arranges Father, Son and Holy Spirit next to each other — but coordination is not consubstantiality. The Racovian Catechism shows: in Scripture, persons or things are often named together with God without themselves belonging to the deity.

1 Sam 12:18: “The people feared God and Samuel.” Exod 14:31: “They believed in YHWH and in Moses his servant.” Acts 20:32: “I commend you to God and to the word of his grace.” Eph 6:10: “Be strong in the Lord and in the might of his strength.” Rev 3:12: “The name of my God, the name of the city of my God, my new name.”

From these juxtapositions it does not follow that Samuel, Moses, the “word of grace” or “might of strength” are persons of God. The juxtaposition in Matt 28:19 functions grammatically in the same way: Father, Son and Holy Spirit are named as the three reference points of Christian initiation — not as three consubstantial persons of one deity.

The Comma Johanneum (1 John 5:7–8 in the Vulgate tradition: “there are three that bear witness in heaven”) is also text-critically highly problematic and is not contained in the oldest Greek manuscripts. Even if it were genuine, it would only reduplicate the statement of Matt 28:19 — without specifying it contentwise into an essence-statement.

Objection 5: “But if Christ is not himself God, he cannot redeem!”

This logic is Anselmian and satisfaction-theological — it presupposes the penal-substitutionary theory of redemption. Socinianly, this theory is itself the construct (cf. the entry on Mark 10:45). Redemption is in biblical usage liberation — not a sum of punishment paid to God which would require an infinite subject.

NT soteriology consistently binds redemption to Christ's sending, obedience, death and being raised — all acts which belong to a mediator sent by God and endowed with authority, not to a consubstantial second person of God. Cf. 1 Tim 2:5: “one God, one mediator-man.”

Heb 5:7–9 shows Christ explicitly as a learner: “He learned obedience through what he suffered; and being made perfect, he became the source of eternal salvation to all who obey him.” A consubstantial co-God cannot “learn obedience” and “be made perfect.” The redemption-logic fits the obedient human mediator, not the trinitarian person.

Finally: that Christ's work has redemptive efficacy does not rest on his ontological consubstantiality, but on God's sovereign decree to redeem through Christ (Acts 2:23–24; Rom 5:8–10). The redemption-logic does not need the Trinity; it needs the obedient mediator and the sovereign Father.

Theological consequences

Connected verses

The following passages support, deepen, or contrast the interpretation presented here:

• Mark 12:29 — Jesus' own confirmation of the Shema as the highest commandment — without trinitarian extension.
• John 17:3 — Christ calls the Father “the only true God” and distinguishes himself from him.
• John 20:17 — “My God and your God” — even after the resurrection Christ predicates the Father as his God.
• 1 Corinthians 8:6 — “One God, the Father — one Lord, Jesus Christ.” Paul carefully distributes the Shema-predicates.
• 1 Timothy 2:5 — “One God, one mediator-man” — the distinction is between God and man, not intra-divine.
• Ephesians 4:6 — “One God and Father of all” — monotheistic statement ecclesiologically situated.
• Isaiah 45:5 — “I am the LORD, and there is no other” — exclusive self-statement of God.
• Malachi 2:10 — “Have we not all one Father? Has not one God created us?” — identification Father = God in the OT.

Summary

Deuteronomy 6:4 is the normative centre of biblical doctrine of God. The Hebrew text says simply “one” ('echad) — numerically, without “compound unity.” The morphological plural 'elohim is pluralis maiestatis, semantically singular — as also with the individual heathen god Astarte or Dagon.

Jesus himself cites the Shema as the highest commandment (Mark 12:29) and lets the strict monotheistic reading stand without comment. Paul explicitly identifies the one God as “the Father” (1 Cor 8:6; Eph 4:6) and Christ as “the one mediator-man” (1 Tim 2:5). Christ himself calls the Father “the only true God” (John 17:3) and distinguishes himself from him.

Socinianly, this reading is therefore no late subtlety, but a restitution of the biblical first principle: one God, the Father — one Lord, Jesus Christ, the Son. The Racovian Catechism formulates the conclusion clearly: the essence of God is numerically one, in a single person; and this person is the Father of Jesus Christ. Thereby the grammar is fixed in which every further statement about Christ, Spirit and the order of salvation must be spoken.