Catholic Commentary
The Sadducees' Question About the Resurrection (Part 2)
26But about the dead, that they are raised, haven’t you read in the book of Moses about the Bush, how God spoke to him, saying, ‘I am the God of Abraham, the God of Isaac, and the God of Jacob’?27He is not the God of the dead, but of the living. You are therefore badly mistaken.”
Mark 12:26–27 presents Jesus' argument for the resurrection based on God's self-identification to Moses at the burning bush. Jesus contends that because God declares Himself the present-tense God of Abraham, Isaac, and Jacob—figures who died centuries earlier—those patriarchs must still be alive, proving resurrection and demonstrating the Sadducees' grave theological error.
God does not say "I was" their God—He says "I am," and a God who remains the God of Abraham today must have kept them alive.
The spiritual sense presses further: every believer who is baptized into Christ enters a covenant relationship with this same I AM, a relationship that death cannot dissolve. "Whether we live or whether we die, we are the Lord's" (Romans 14:8).
Catholic tradition finds in these two verses a convergence of several interconnected dogmatic claims.
On the immortality of the soul and bodily resurrection: The Catechism of the Catholic Church carefully distinguishes the immortality of the soul (every human soul survives death, CCC 366) from the resurrection of the body (the whole person, body and soul, is raised at the last day, CCC 988–1004). Jesus' argument in verse 27 most immediately demonstrates the first: the patriarchs are alive now in God's presence, their souls subsisting. This supports the doctrine of the intermediate state — that the souls of the faithful live in God between death and the final resurrection. The full bodily resurrection is the consummation affirmed elsewhere in Scripture, but the root principle — the indestructibility of a personal covenantal relationship with God — is what Jesus establishes here.
Church Fathers: St. Gregory of Nyssa (On the Soul and the Resurrection) argues that the present-tense divine naming proves the soul's persistence after death. St. Augustine (De Trinitate) connects the divine name "I AM" with God's eternity and immutability, noting that those in covenant with the eternal God share, by participation, in the permanence of His life. St. Justin Martyr (Dialogue with Trypho, ch. 140) cites this passage explicitly as proof of resurrection against Jewish interlocutors.
Aquinas: St. Thomas Aquinas (Summa Theologiae I-II, q. 5) treats beatitude as the final end of the human person, one that death cannot permanently frustrate if God has covenantally bound Himself to that person — precisely the logic Jesus employs.
Second Vatican Council: Gaudium et Spes §18 affirms that "God has called man and still calls him so that with his entire being he might be joined to Him in an endless sharing of a divine life beyond all corruption." This conciliar statement is almost a paraphrase of Jesus' argument: the call of God ("I am your God") implies endless life.
The passage also implicitly defends the veneration of the saints: if Abraham, Isaac, and Jacob are living in God's presence, they are not inaccessible. The Communion of Saints, taught in CCC 954–959, rests on this same conviction that death does not dissolve the Body of Christ.
The Sadducees' error has contemporary heirs. A secular culture saturated with materialism effectively teaches that persons are reducible to their biology — that death is simply the dissolution of a biological system, and nothing endures. Many Catholics absorb this assumption unconsciously, treating resurrection as poetic metaphor rather than ontological fact.
Jesus' argument offers a pointed antidote. Ask yourself: do you pray for the dead? Do you ask the intercession of the saints? Do you approach the Eucharist as genuine communion with the risen Christ — and, through Him, with all the living members of His Body, including those who have died? Each of these practices presupposes exactly what Jesus argues here: that the covenant God has made with persons is stronger than death.
Practically, these verses call Catholics to recover a culture of the dead in the richest Catholic sense — praying the Rosary for departed loved ones, observing All Souls' Day with genuine theological weight, visiting graves not as sentimental ritual but as acts of faith that God is their God still. The prayer Eternal rest grant unto them, O Lord is a petition addressed to the I AM who names Himself the God of the living. It is, in miniature, the theology of Mark 12:27.
Commentary
Mark 12:26 — "Haven't you read in the book of Moses about the Bush?"
Jesus' appeal to "the book of Moses" is precise and polemical. The Sadducees accepted only the Pentateuch as fully authoritative Scripture, dismissing the Prophets and Writings. Jesus meets them entirely on their own ground, demonstrating that the resurrection can be proven from the very Torah they revere. The phrase "about the Bush" (Greek: epi tou batou) is a typical ancient Jewish way of citing a passage by its most memorable feature, since books were not divided into numbered chapters. The reference is to Exodus 3:1–6, the theophany at Horeb.
The quotation — "I am the God of Abraham, the God of Isaac, and the God of Jacob" — is presented in the present tense. God does not say I was their God; He says I am. This is not merely a grammatical subtlety. The divine name revealed at the bush, YHWH (connected in the narrative with ehyeh, "I AM," Exodus 3:14), is the name of the One whose being is pure, self-subsistent existence. To invoke that name in present tense alongside the patriarchs — figures who had died centuries before Moses stood at Horeb — carries unavoidable ontological weight. Jesus is pressing his hearers to think: what does it mean for this God, the God of I AM, to name Himself in relation to persons?
Mark 12:27 — "He is not the God of the dead, but of the living."
This is the argumentative climax. The logic proceeds in two steps. First, if God is currently the God of Abraham, Isaac, and Jacob (present tense), and second, if God is emphatically not the God of the dead, then Abraham, Isaac, and Jacob must presently be alive. Death has not severed their covenant relationship with God — indeed, it cannot, because God's covenant fidelity (hesed, emet) is indestructible.
The added rebuke, "You are therefore badly mistaken" (Greek: polu planasthe — "you are greatly led astray"), is unusually severe in Mark's Gospel. Jesus does not simply say they are wrong; He diagnoses the gravity of their error. Their mistake is not an innocent misreading but a profound theological blindness: they have misread both the Scriptures and the power of God (cf. v. 24). To deny resurrection is to have misunderstood who God fundamentally is.
Typological and Spiritual Senses
At the typological level, the burning bush itself — unconsumed despite the fire — has long been read by the Fathers as a figure of the Resurrection: life triumphant over destruction. The same theophany that grounds Jesus' argument images His argument. Moreover, Abraham, Isaac, and Jacob are themselves typological figures: their enduring life in God anticipates the full resurrection life made possible in Christ. The covenant God swore to them was never merely temporal; its ultimate horizon was eschatological communion.