The Shema and the Trinity

Twice a day, every day, the observant Jew says the same sentence. It is the first prayer a Jewish child learns and the last words a dying Jew tries to speak: Shema Yisrael, Adonai Eloheinu, Adonai Echad—“Hear, O Israel: the LORD our God, the LORD is one” (Deuteronomy 6:4). Martyrs have died with it on their lips. It is the closest thing Judaism has to a creed, and its theme is unmistakable: there is one God, and Israel belongs to him alone.¹

So the question is a good and honest one. If God is emphatically, gloriously one—if the central confession of the faith Jesus himself recited is a hymn to divine singularity—then how can Christians turn around and speak of three? Doesn’t the doctrine of the Trinity quietly cancel the very sentence it claims to honor? Many a thoughtful Jewish person, and many a Muslim and Unitarian, has concluded that it does. This essay takes that objection seriously and argues the opposite case: that the Trinity does not deny the Shema but is, in fact, the early church’s own reading of it—and that the most striking evidence comes not from a fourth-century council but from a first-century Pharisee.

Stating the Question Carefully

First, a concession that must come at the start, not the end. Classical Christianity affirms the Shema without crossing its fingers. The Nicene faith confesses “one God”—not three gods, not a committee of deities, not one God plus two junior partners. The doctrine of the Trinity is the claim that the one God exists eternally as three coequal, coeternal persons: Father, Son, and Holy Spirit, one in being. It is emphatically not the claim that there are three Gods (tritheism), nor that the one God merely wears three masks at different times (modalism), nor that the Son and Spirit are lesser, created beings (subordinationism). Whatever the Trinity is, it is a doctrine of monotheism. If it were not, it would have failed at the first hurdle.

Second, we should be honest about what kind of argument can and cannot be made here. No one should claim that the Trinity is “stated” in Deuteronomy 6:4, as if Moses had a doctrine of three persons in view. That would be reading the New Testament back into a text written centuries before it. The careful claim is more modest and, I think, more powerful: the Shema confesses that God is uniquely one, and that confession does not, by itself, settle the inner life of the one God it names. The Christian conviction is that the same God who said “Hear, O Israel” later revealed himself more fully—and that the apostles, reading the Shema in light of Jesus, found in it not a wall against the Trinity but a doorway.

A Lexical Argument to Handle With Care

Here we must be especially careful, because this is where popular apologetics most often overreaches. The Hebrew word translated “one” in the Shema is echad＊About this wordIs sayingechad is simply the ordinary Hebrew word for “one”; in context it can describe a unity made of parts (“one flesh”).Not sayingIt does not by itself prove plurality in God or the Trinity. That “compound unity” argument is a discredited overreach; the case for the triune God rests on divine identity, not on this one word.. A common apologetic move runs like this: echad means a compound or composite unity, not a bare singularity, because it describes a husband and wife becoming “one (echad) flesh” in Genesis 2:24, or the spies carrying back “one (echad) cluster” of grapes in Numbers 13:23. Hebrew has another word, yachid, for solitary, only-one-ness—and the Shema, the argument concludes, pointedly does not use it. Therefore (so the claim goes) the Shema itself hints at plurality within God.

That argument proves far less than its enthusiasts suppose, and intellectual honesty requires saying so plainly. The plurality in “one flesh” or “one cluster” does not come from the word echad at all; it comes from the noun it modifies. A “cluster” is a many-membered thing, so “one cluster” is one collection of many grapes—but that tells us nothing special about echad, which simply means “one.” Echad is in fact the ordinary Hebrew cardinal number; it routinely describes things that are emphatically singular, as in “one day” or “one man.” The standard Hebrew lexica treat it as the unremarkable numeral “one.”² Critics from the Jewish and Unitarian traditions have pressed exactly this point, and on this lexical point the facts are with them: echad does not prove a composite unity, and the echad-versus-yachid contrast cannot bear the doctrinal weight some place on it.³

What can be said—and only this—is the negative claim: echad does not forbid internal complexity either. It asserts that YHWH is uniquely, exclusively Israel’s God; it does not legislate on the metaphysics of how many “persons” that one God is. The Shema’s polemic is against the gods of the nations—against having any rival to YHWH—not against later questions about the divine life that no Israelite was yet asking.⁴ So the word leaves a door ajar. It does not, on its own, walk anyone through it. For that we need to leave the lexicon and go to the New Testament, where a far stronger argument waits.

The Heart of the Case: Paul Rewrites the Shema

The decisive evidence is one of the most remarkable sentences in the New Testament, and its author is the last person you would expect to tamper with Israel’s creed. Paul of Tarsus was, by his own description, “a Hebrew of Hebrews; as to the law, a Pharisee” (Philippians 3:5)—a man who had recited the Shema since boyhood and once persecuted the church for what he saw as its blasphemy. Writing to the Corinthians around AD 53–54, in a chapter explicitly about the danger of idolatry, he sets the gospel against the pagan world’s “many ‘gods’ and many ‘lords’” and then says this:

“Yet 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.” (1 Corinthians 8:6)⁵

To feel the force of this, you have to hear it as Paul’s first readers did. In the Greek Old Testament that Paul used, the Septuagint, the Shema reads Kyrios ho theos h&emacron;m&omacron;n Kyrios heis estin—“the LORD (Kyrios) our God (theos) is one LORD.” Two divine titles, theos and Kyrios, both naming the one God of Israel; Kyrios in particular was the standard reverent substitute for the unspeakable name YHWH.⁶ Now look again at what Paul does. He takes the creed’s two words for the one God—theos and Kyrios—and he distributes them: “one God, the Father… and one Lord, Jesus Christ.” He has not added a second deity alongside the Shema. He has reached inside the Shema and placed Jesus within it.

This reading is associated above all with the British scholar Richard Bauckham, who calls it the New Testament’s “Christology of divine identity,” and with N. T. Wright, who argues that Paul has “redefined” the Shema around Jesus, producing a kind of christological monotheism.⁷ Bauckham’s central thesis—widely influential, though the divine-identity category is itself debated—is that ancient Jews defined God less by abstract metaphysics than by identity—by who God is and what only God does: God alone is the sole Creator of all things, and God alone is the sovereign Ruler of all things. To include Jesus in that identity is not to make him a second god; it is to confess that the one God of Israel is somehow Father and Son together. As Bauckham puts it, the earliest Christians “included Jesus in the unique divine identity” of the God of Israel.⁸ Wright, for his part, suggests that Paul, having once prayed the Shema daily as a Pharisee, may have gone on praying this reformulated Shema with the same devotion.⁹

Notice the two things that make this so weighty. First, the who: this is not a Gentile convert centuries later but a trained Pharisee within roughly two decades of the crucifixion. Second, the where: he does it in the middle of an argument against idolatry. If Paul thought he were smuggling a second, lesser divine being into the picture, he would be committing in verse 6 precisely the sin he condemns in verse 5. The natural reading is that he saw no contradiction at all: one God, confessed in the creed’s own words, now known to be Father and Son.

The Strongest Objection, Stated at Full Strength

The traditional Jewish reading of the Shema deserves to be heard in its full strength, not as a foil. For more than two millennia, the mainstream of Jewish interpretation has understood Deuteronomy 6:4 as strict, indivisible monotheism: the LORD is one—one in the plainest sense, without parts, without persons, without a “within.” On this view, the Christian doctrine is not a development of Israel’s faith but a departure from it, and the burden lies entirely on the Christian to explain why the custodians of the creed have always read it the other way.

The objection can be sharpened on the very text Christians lean on. The leading scholarly critic here is James F. McGrath, who argues directly against Bauckham and Wright that 1 Corinthians 8:6 does not “split” the Shema at all. On McGrath’s reading, Paul confesses the “one God” of the Shema—the Father—and then adds “one Lord, Jesus Christ” alongside that confession, not inside it.¹⁰ On this reading, Jesus is the Messiah, the agent through whom God acts, exalted to a unique status—but a distinct figure subordinate to the one God, not a person of that one God. Paul, the objection runs, is doing something thoroughly Jewish: Second Temple Judaism was full of exalted intermediary figures—personified Wisdom, the great angels, exalted patriarchs like Enoch—who do God’s work, even bear God’s name, without being God. Slotting the risen Jesus into that role of supreme agent is striking, but it is not the Nicene Trinity, and reading Nicaea into Paul, on this view, is anachronism.

This is the objection at its best, and a fair-minded Christian should grant the facts it rests on, though not the inference drawn from them. The agency literature exists. Some Second Temple texts do exalt intermediary figures to dizzying heights. And the grammatical distinction in the verse—all things from the Father, all things through the Son—is genuinely there and must be reckoned with, not waved away.

A Reply—and What It Can and Cannot Carry

Take McGrath’s “alongside, not inside” reading first, because everything turns on it. The trouble is the word Kyrios. In the Shema Paul is unmistakably echoing, Kyrios is not a generic word for a master; it is the Septuagint’s rendering of the divine name itself. So when Paul confesses “one Lord, Jesus Christ,” using the creed’s own divine title and pairing it with the creed’s “one God,” the “alongside” reading faces a dilemma. If “one Lord” means a being who is not the one God—a separate, exalted creature—then Paul has confessed, in an anti-idolatry argument, one God plus one additional divine-but-not-God Lord through whom all things were made. That is not the strict monotheism the objection wants to protect; it is a second power. And if the reply is that an agent could bear God’s name without becoming a second god, grant it: God’s name and functions could be entrusted to a supreme agent, and the worship itself still could not be. The reading that actually preserves monotheism is the trinitarian one: the one divine identity, confessed under both of the creed’s titles, shared by Father and Son.

What about “through whom”? Doesn’t the preposition cast Jesus as a mere instrument, an intermediary lower than the Father from whom all things come? Here the decisive consideration is creation itself. In Israel’s Scriptures, creating is the act that marks the absolute line between God and everything else: “I am the LORD, who made all things… who alone stretched out the heavens” (Isaiah 44:24). The one through whom all things were made cannot himself be among the things that were made; he stands on the Creator’s side of that line.¹¹ And the prepositions do not, in fact, mark a difference of rank: Paul elsewhere piles all of them onto God without distinction—“from him and through him and to him are all things” (Romans 11:36). The Son is given a creation role that Jewish monotheism reserved for God alone.

The exalted-agent objection is the strongest, and it must be answered on its own ground. Two things distinguish Jesus from every intermediary figure in the literature. The first is the boundary of worship. As Larry Hurtado has documented in exhaustive detail, the angels of Second Temple Judaism consistently refuse worship and redirect it to God—the angel in Revelation cries “Worship God!” (Revelation 19:10). Yet the earliest Christians prayed to Jesus, were baptized in his name, sang to him, and called on him in worship—a devotional pattern Judaism reserved for God alone.¹² The point needs care, because a gesture of homage was not itself the line: Israelites could bow before a king as well as before the LORD (1 Chronicles 29:20), and some texts picture homage to an exalted figure. What Jewish monotheism guarded jealously for God was not the posture of homage but the substance of worship—sacrifice, invocation, prayer. The second is that no intermediary figure we know of was placed inside the Shema. Wisdom is praised; Enoch is exalted; but no Jewish writer we know of did so (Philo’s “second god,” the Logos, in Questions on Genesis 2.62, is the nearest case, and it is never placed inside that confession). Paul did.

And the last objection should go to the critic before the reply. McGrath and others can press one more point: even granting your reading of this one verse, you have built a mountain on a single sentence from one unusually creative theologian—hardly a foundation for the Trinity. The honest answer is that the verse does not stand alone. It reads less like a doctrine Paul invented than like a confession he quotes—compact, balanced, assumed as common ground with readers he is correcting on other matters. And the same devotion surfaces in independent streams: the Philippians 2 hymn—widely regarded as pre-Pauline tradition—applies to Jesus the fiercely monotheistic oath of Isaiah 45:23—“to me every knee shall bow”—so that every knee now bows at the name of Jesus.¹³ The Aramaic-speaking churches, older than any Greek theology, were already crying Marana tha, “Our Lord, come!”, a prayer addressed to Jesus (1 Corinthians 16:22).¹⁴ Baptism ran in the threefold name of Father, Son, and Spirit (Matthew 28:19). Paul is not the inventor of this devotion; he is our earliest written window onto a worship that was already there.

It is worth seeing how deeply the Shema runs through the New Testament, because its sheer pervasiveness is what makes Paul’s move in 1 Corinthians 8:6 so pointed. Sometimes the creed simply grounds the equal standing of Jew and Gentile: because “God is one,” he must be the God of Gentiles and not of Jews only (Romans 3:29–30)—an echo of Zechariah’s hope that “the LORD will be one and his name one” (Zechariah 14:9). Sometimes it supplies a whole liturgical cadence—“one body… one Spirit… one Lord, one faith, one baptism, one God and Father of all” (Ephesians 4:4–6). And in John the oneness of God becomes the very pattern for the church, as Jesus prays that his people “may be one, even as we are one” (John 17:11, 22). The confession of divine oneness was simply the air these writers breathed—which is why reworking it around Jesus, as Paul does in 1 Corinthians 8:6, is not a careless flourish but a deliberate and startling act.¹⁸

The Honest State of Scholarship

Where does the debate actually stand? On the central exegetical question, the Bauckham–Wright reading of 1 Corinthians 8:6 as a deliberate, christological reformulation of the Shema has become widely influential—arguably the dominant reading—among New Testament scholars, supported in their different ways by Hurtado and, more cautiously, by James D. G. Dunn (who speaks of Paul as, in effect, splitting the Shema).¹⁵ But it is genuinely contested, not unanimous. James F. McGrath and others continue to argue that “one Lord” is added to, not folded into, the creed; and a wider scholarly literature debates whether “splitting,” “supplementing,” or “brokering” best describes what Paul is doing.¹⁶ These are real disagreements among serious scholars, and the trinitarian should name them as such rather than pretend the case is closed.

Two further honesties are owed. The first is to Judaism. The traditional Jewish reading of the Shema is a serious and ancient interpretation, held in good faith by people who love this text as much as any Christian—and on what the verse itself asserts, Christians agree completely: there is one God, and no other. The Christian claim is not that Jews have failed at arithmetic; it is an intra-biblical claim that the one God of the Shema has disclosed more of his life than the verse alone reveals—a claim Jewish readers are entitled to find unpersuasive. The second honesty is historical: the influential thesis of Daniel Boyarin and others, that something like “binitarian” ideas (a second divine figure beside God, as in the “two powers in heaven” debates and Daniel 7’s “one like a son of man,” who comes with the clouds) circulated within ancient Judaism before being branded heresy, is itself debated among specialists and should be offered as a suggestive line of evidence, not a proof. It must also be kept sharply distinct from a stronger and quite different claim—associated with Margaret Barker and Bernhard Lang—that ancient Israel actually worshipped two gods, a high God and a second, subordinate deity, before monotheism prevailed. That thesis Bauckham judges the evidence does not support: the surviving literature of Second Temple Judaism is, as far as it reaches, uniformly monotheistic. So the most the “two powers” material can carry is the modest point that Jewish monotheism already had room for God’s own Word, Wisdom, and Glory—never that there were two gods for the first Christians to choose between. When the New Testament includes Jesus in the divine identity, then, it is not reviving a buried polytheism; it is confessing the one God more fully.¹⁷

Conclusion: What This Does and Does Not Establish

What, then, has the argument shown? It has not shown that the Trinity is taught in Deuteronomy 6:4; it is not, and claiming so concedes too much to the lexical over-reach we set aside at the start. It has not shown that echad “means” a compound unity; it does not. And it has not refuted the traditional Jewish reading by force of grammar alone; that reading is held in good faith, but grammar alone was never going to decide the question; the case against it rests on what the one God has since disclosed in Christ.

What the argument does establish is this. The Shema confesses one God and does not, by itself, foreclose the question of that God’s inner life. And the earliest Christians—Jewish monotheists to a man, led here by a Pharisee writing against idolatry—did not abandon the Shema when they confessed Jesus as Lord. They recited it, with Jesus inside it. That is the heart of the matter: the doctrine of the Trinity is not a third-party intrusion upon Israel’s creed but the church’s own reading of it—monotheism kept, not monotheism lost. The Christian does not answer the Shema by changing the subject from “how many gods?” The Christian answers, with Paul, that there is one—one God rich enough to be Father, Son, and Spirit. So the honest answer to the question is no: the Shema does not rule out the Trinity, and the objection built on it does not hold. And this is what we hold to be true: the one God exists eternally as Father, Son, and Holy Spirit—three coequal, coeternal persons, one God. This argument does not prove that; it clears the charge against it. The positive case rests on revelation and on the historical case for who Jesus was—on whether the carpenter from Nazareth said and did what only God can say and do, and was vindicated by resurrection.