Tawhid and the Problem of Eternal Love

Among the ninety-nine Beautiful Names of God in Islam—al-Asma’ al-Husna—is one that any Christian should hear with gladness rather than suspicion: al-Wadud, “the Loving.” It appears twice in the Qur’an, and both times in the warm company of forgiveness: “Indeed, my Lord is Merciful and Affectionate” (Surah 11:90), and “And He is the Forgiving, the Affectionate” (Surah 85:14)—where the divine name rendered “Affectionate” is al-Wadud, “the Loving.”¹ Muslim scholars note that the root behind al-Wadud—wudd—is not the bare inner feeling of hubb but love that pours itself out in action, an active and demonstrative affection.² No fair description of Islam can call it a religion without a loving God. It confesses one, by name.

And yet a question waits underneath that lovely name—a question Muslim theologians and mystics have themselves felt and labored over. It is not a slogan or a trap. It is this: if God is eternally and essentially loving, then love seems to require a beloved—and on a strictly unitarian conception of God, who or what did God love before there was anything at all? The question reaches deep into what kind of being God is, and the Christian claim is not that Islam has no answer, but that the Trinity gives the most coherent one. This essay tries to state the problem honestly, to put the Muslim replies at their strongest, and then to show why the eternal communion of Father, Son, and Spirit secures something both faiths want to say—that God is supremely loving—in a way solitary oneness struggles to.

What Tawhid Affirms

At the heart of Islam stands tawhid: the absolute, undifferentiated oneness of God. God is one in essence, one in will, one in worship; He has no partner, no offspring, no internal composition or plurality of any kind. The shortest and most beloved creed of this oneness is Surah 112, al-Ikhlas: “Say, He is Allah, the One. Allah, the Eternal Refuge. He neither begets nor is born, nor is there to Him any equivalent.”³ To compromise this oneness—to associate any partner with God—is shirk, the one sin the Qur’an presents as unforgivable.

It is essential to state this carefully and charitably, because the argument that follows depends on representing it rightly. Mainstream Sunni and Shia theology does not picture God as a lonely or impoverished being. God is al-Ghani, the Self-Sufficient, who needs nothing and no one; the creation adds nothing to Him and its absence would take nothing from Him. This divine self-sufficiency—what Christian theologians call aseity—is something Islam and orthodox Christianity hold in common and both hold dear. The whole force of the problem we are about to examine lies precisely there: it is a tension internal to two things Islam wants to affirm together—that God is genuinely loving, and that God is utterly self-sufficient.

The Argument Stated Carefully

The argument is best stated as a dilemma, not a refutation. It runs:

1. Love, in its full and proper sense, is relational: to love is to love someone. Love wills the good of, and delights in, a beloved who is genuinely other than the lover.
2. If love is essential to God—part of what God necessarily and eternally is, not merely something God came to do—then there must be, from eternity, a beloved adequate to that love.
3. On strict unitarianism, before creation there was no one and nothing other than the single divine person.
4. So the unitarian seems pressed onto one of three horns: either (a) God’s love is not essential but began with creation—an acquired state, making God dependent on creatures to be fully Himself; or (b) creation is in some sense necessary to God, which compromises His self-sufficiency; or (c) God’s eternal love is purely self-directed—God loving God.

The Christian contention is that horns (a) and (b) cost Islam something it does not want to pay—the perfection and aseity of God—and that horn (c), self-love, while the most promising, does not quite reach what the word “love” most fully means. The Trinity, by contrast, locates an eternal beloved within God: the Father eternally loves the Son in the Spirit. On that view “God is love” (1 John 4:8) is not a description of how God treats creatures but of what God timelessly is in Himself—and creation becomes the overflow of a love already complete, not the occasion on which a solitary God first had anything to love.⁴

How the Argument Developed: Richard of St Victor

This is not a modern debating point invented to embarrass Muslims. Its classic form long predates the modern dialogue and was first aimed not at Islam but at understanding the inner life of the Christian God. In the twelfth century, the Augustinian canon Richard of St Victor, in his treatise De Trinitate (c. 1170), advanced what has become known as the argument from love. His reasoning, in Books Three and Five, runs roughly thus: God is the supreme good; the supreme good must possess caritas, the highest charity-love, for nothing is better than charity; but no one who loves only himself has true charity, for charity by its nature is directed toward another. Therefore the supreme good must love a beloved who is fully its equal—and, Richard adds in a further step, the perfection of shared love (condilectio) calls for a third who is loved in common. The fullness of love within God is what led Richard to argue for a plurality of persons.⁵ It is worth being candid about where the argument is strongest and where it strains: the move from a second person to a third is the most contested step, and Richard offers it as fitting rather than strictly necessitated—the love argument on its own reaches at most a duality of persons (binitarianism), and the further step to a Trinity is a claim about love’s fullness, not a deduction the premises compel.

Richard’s argument was a constructive case for the Trinity from within Christian faith; it becomes a comparative argument when set beside any strictly unitarian theology. Its modern champion is the Oxford philosopher Richard Swinburne, who in The Christian God (1994) revives the love argument in analytic dress. A perfectly good divine person, Swinburne argues, would have overriding reason to bring about and to share love with another divine person; and the highest cooperative love is not a closed dyad turned in on itself but love that together pours out toward a third. Love, Swinburne argues, “involves sharing” and involves “co-operating with another to benefit third parties.”⁶ Swinburne is careful, and so should we be: he offers this as a reason that makes the Trinity intelligible and fitting, not as a coercive proof that browbeats the unitarian. That is the right register for what follows. One clarification matters for orthodoxy: this essay borrows only Swinburne’s intuition that perfect love requires sharing, not his further talk of one divine person “bringing about” another—a production model the historic doctrine of eternal generation does not endorse, and which we set aside here.

The Muslim Reply, at Full Strength

An argument is only as good as the strongest objection it survives, so the Muslim responses deserve to be laid out at their best—and they are considerable.

First: God loves Himself, and that is enough. The most powerful reply is horn (c) embraced rather than feared. The great theologian and mystic Abu Hamid al-Ghazali (d. 1111) developed exactly this. For al-Ghazali, love follows perfection and beauty, and the most perfect and beautiful reality is God Himself; God, being the self-subsisting Real who knows Himself perfectly, eternally loves and rejoices in Himself.⁷ On this view God’s eternal love has always had a wholly adequate object—the infinite divine perfection—and needs no creature and no second person to be exercised. The Christian premise that “self-love is not true love” is, the Muslim may say, simply false when the self in question is infinitely perfect. To love the supreme good is to love God, even when the lover is God.

Second: a divine name describes God; it does not import human metaphysics. The Muslim can press that the whole argument trades on a picture of love drawn from human persons, who are needy, incomplete, and made for one another. To insist that al-Wadud must therefore behave like human love—requiring an external beloved to be “real”—is to commit a subtle anthropomorphism, exactly the error tawhid exists to forbid. God’s attributes are His own, possessed in a manner unlike creatures (bila kayf, “without asking how,” as the Ash’ari tradition puts it). The believer affirms that God is loving without presuming that divine love must mirror the structure of created love.

Third: love among the names need not require an eternal external object. Many of the divine names describe capacities that God exercises in relation to creation without those relations being eternal—God is al-Khaliq (the Creator) and al-Razzaq (the Provider), yet there were no creatures to create or provide for “before” creation, and no Muslim thinks this impugns God. Why should al-Wadud be different? God is eternally loving in the sense that loving is part of His perfect nature, fully ready and fully Himself, and that nature expresses itself toward creatures when they exist. The capacity is eternal; its outward exercise is not—and that is no defect.

Fourth: Islam has a deep and living tradition of divine love. The Christian should not imagine Islam as a cold legalism only lately embarrassed into love-talk. The Sufi tradition—Rabi’a al-Adawiyya, al-Ghazali, Ibn Arabi, Rumi—made mahabba, the mutual love between God and the soul, the very center of the spiritual life, often citing Surah 5:54: “He loves them and they love Him.”⁸ The contemporary Cambridge theologian Tim Winter (Abdal Hakim Murad) describes love (mahabba) as a fundamental dimension of the Islamic religion and part of the fitra, the primordial human nature, a yearning to return to the Beloved.⁹ A tradition this saturated in divine love, the Muslim may fairly say, hardly needs a foreign doctrine to teach it that God loves.

These replies are serious, and a Christian who waves them away has not understood them. Concede at once what should be conceded: Islam genuinely affirms a loving God; self-love of the infinitely perfect is not nonsense; and the warning against anthropomorphism is a real and important caution. The reply that follows is offered as a weighing of which picture better secures what both faiths want, not as a demolition of a strawman.

The Considered Reply

Take the strongest objection—divine self-love—first, because everything turns on it. The Christian reply is not that self-love is worthless but that it does not exhaust, and arguably does not reach the summit of, what we mean by love at its highest. The kind of love the New Testament calls agape, and the kind Richard called caritas, is essentially self-giving and other-directed: it finds its glory in willing the good of, and delighting in, an other. A being that loves only itself, however perfect, exhibits something we would hesitate to call the highest love precisely because the structure of giving-to-another is missing. This is not an arbitrary preference for the human pattern; it is a claim about the logic of love’s highest form, that it is fulfilled in communion rather than in solitary self-regard. Here the Muslim and the Christian have a genuine disagreement about what perfect love is—and it should be labeled as a contested philosophical claim, not a settled proof. The Christian holds that other-directed love is greater; the unitarian holds that self-love of infinite perfection is sufficient. The argument is strong only to the degree that the first intuition is right, and honest apologetics says so.

Yet notice what the Trinity accomplishes that self-love cannot. It allows the Christian to affirm both that God’s love is essential and eternal and that it is the self-giving, other-directed love we most admire—without making God dependent on creatures. The Father’s love for the Son is not love of a creature, nor a love that began, nor a need met from outside; it is internal to the one God, eternal, and uncompromising of aseity. The Triune God is no more dependent on creation for His love than the unitarian God is—but His love already has the relational structure that, on the Christian view, love at its height requires. That is the decisive contrast: not “Islam has a needy God,” which is false, but “the Trinity lets one say God is love in the fullest sense while keeping God complete in Himself.”

Now the “capacity, not exercise” reply—the comparison with Creator and Provider. This is the Muslim’s best move, and it must be granted real force. It is internally consistent to say God is eternally loving the way He is eternally Creator: possessing the attribute fully, exercising it toward creatures in time. If love is treated as a capacity, the dilemma loosens considerably. But here is the cost the Christian asks the Muslim to weigh. There is a meaningful difference between attributes of relation to what is made (creating, providing, forgiving) and attributes said to constitute God’s very being. The Qur’an does not say “God is creating” as a statement of essence; creating is something God does. The striking thing about the Christian claim—“God is love”—is that it puts love in the category of essence, not activity. If the Muslim assimilates al-Wadud to al-Khaliq, then love becomes, like creating, something God does rather than something God essentially is—which is an internally consistent position, but a more modest one than “God is love” in the Johannine sense. The argument, fairly stated, is not that the Muslim view is incoherent but that it cannot easily reach the height of 1 John 4:8 while keeping God solitary.

To the charge of anthropomorphism: the Christian should accept the discipline behind it. We are not entitled to assume God’s love is needy or incomplete like ours. But the argument does not require that. It requires only that love’s highest form is relational and self-giving—a formal feature, not a creaturely limitation—and that, far from importing human neediness into God, the Trinity removes it, because the divine persons give to and delight in one another out of fullness, never out of lack. If anything, it is the Christian who most thoroughly purifies divine love of neediness, by grounding it in an eternal communion that wanted for nothing when it made the worlds.

Finally, the rich Sufi tradition of mahabba should be honored, not contested—and it is in some ways the Christian’s ally, for it shows how deeply the Muslim heart longs to speak of love between God and the soul. The friendly observation is only this: the Sufi accounts of divine love are overwhelmingly accounts of God’s love toward creation and the soul’s love toward God—love across the Creator–creature divide, which both faiths affirm. They do not, and on tawhid cannot, describe an eternal love within God prior to and independent of creation. The question the argument raises is left exactly where it was: granting all the beauty of mahabba, what was God’s love doing before there was a soul to love?

The Honest State of the Question

Where does this leave the debate among those who study it? Several things should be said plainly. First, sophisticated Muslim theology has resources—divine self-love, the capacity-versus-exercise distinction, the apophatic refusal to anthropomorphize—that make “gotcha” versions of this argument fail. Any Christian who presents it as a knockdown will meet a thoughtful Muslim who has answers, and will deserve the rebuff. Second, the argument’s real strength is comparative and abductive: it claims the Trinity offers a better account of how God can be essentially, eternally, and self-givingly loving while needing nothing—not that unitarianism is logically impossible. Third, the hinge of the whole dispute is a genuinely contested premise—whether the highest love must be other-directed—on which careful people disagree, and which the Christian cannot simply assume. The argument is a serious reason, not a demonstration.

It is also worth conceding the limits of the Christian’s own house. The doctrine of the Trinity raises its own hard questions—how three persons are one God without tritheism—questions taken up in our companion essays.¹⁰ The love argument does not relieve the Christian of that burden; it only shows that the doctrine, once defensible, pays a dividend the unitarian cannot collect.

Conclusion: What the Argument Does and Does Not Establish

This argument does not prove that Islam worships an unloving God; it manifestly confesses a loving one in al-Wadud. It does not prove the Trinity true—that case rests elsewhere, above all on the historical person of Jesus and his resurrection. And it does not corner the thoughtful Muslim, who has real replies. What it does establish is narrower and, rightly used, quite powerful: that the claim both faiths reach for—that God is supremely and eternally loving, and yet needs nothing—is secured most coherently when love has an eternal beloved within God. A solitary God can love His creatures once He has made them, and can love His own perfection always; but only a God who is eternally Father, Son, and Spirit can be said—if the other-directed premise holds—to be love before the foundation of the world in the fullest and most self-giving sense, and so to create not to gain a beloved, but to share a love already overflowing.

So the honest verdict on this one question is plain: not that Islam’s God is unloving—he is confessed as al-Wadud, the Loving—but that a solitary God cannot ground an eternal, other-directed love the way the Triune God can. On this specific point the unitarian account does not reach what both faiths want to say about God and love; the Christian account does.

That is a claim to be offered, in the spirit of 1 Peter 3:15, with gentleness and respect—to a Muslim friend who already loves the God who is al-Wadud, and who may find in the Trinity not the denial of that name but its deepest possible ground＊The same love named, not the same theologyIs sayingMuslims sincerely intend to worship the one Creator and rightly name him loving (al-Wadud), and the gospel presents the Triune God as the fuller ground of the very love they prize.Not sayingNot that the Islamic and Christian conceptions of God are simply identical, or that the Trinity is an optional refinement. The essay's case is that a solitary God cannot secure eternal, other-directed love as the Trinity does..