He is not the God of the dead, but the God of the living: ye therefore do greatly err.

People's New Testament

12:18-27 Then come unto him the Sadducees. For notes on this interview with the Sadducees, see Mt 22:23-33. Compare Lu 20:27-40.

Wesley's Notes

12:27 He is not the God of the dead, but the God of the living - That is, (if the argument be proposed at length,) since the character of his being the God of any persons, plainly intimates a relation to them, not as dead, but as living; and since he cannot be said to be at present their God at all, if they are utterly dead; nor to be the God of human persons, such as Abraham, Isaac, and Jacob, consisting of souls and bodies, if their bodies were to abide in everlasting death; there must needs be a future state of blessedness, and a resurrection of the body to share with the soul in it.

Jamieson-Fausset-Brown Bible Commentary

27. He is not the God of the dead, but the God of the living-not "the God of dead but [the God] of living persons." The word in brackets is almost certainly an addition to the genuine text, and critical editors exclude it. "For all live unto Him" (Lu 20:38)-"in His view," or "in His estimation." This last statement-found only in Luke-though adding nothing to the argument, is an important additional illustration. It is true, indeed, that to God no human being is dead or ever will be, but all mankind sustain an abiding conscious relation to Him; but the "all" here means "those who shall be accounted worthy to obtain that world." These sustain a gracious covenant relation to God which cannot be dissolved. (Compare Ro 6:10, 11). In this sense our Lord affirms that for Moses to call the Lord the "God" of His patriarchal servants, if at that moment they had no existence, would be unworthy of Him. He "would be ashamed to be called their God, if He had not prepared for them a city" (Heb 11:16). It was concluded by some of the early Fathers, from our Lord's resting His proof of the Resurrection on such a passage as this, instead of quoting some much clearer testimonies of the Old Testament, that the Sadducees, to whom this was addressed, acknowledged the authority of no part of the Old Testament but the Pentateuch; and this opinion has held its ground even till now. But as there is no ground for it in the New Testament, so Josephus is silent upon it; merely saying that they rejected the Pharisaic traditions. It was because the Pentateuch was regarded by all classes as the fundamental source of the Hebrew religion, and all the succeeding books of the Old Testament but as developments of it, that our Lord would show that even there the doctrine of the Resurrection was taught. And all the rather does He select this passage, as being not a bare annunciation of the doctrine in question, but as expressive of that glorious truth out of which the Resurrection springs. "And when the multitude heard this" (says Mt 22:23), "they were astonished at His doctrine." "Then," adds Lu 20:39, 40, "certain of the scribes answering said, Master, thou hast well said"-enjoying His victory over the Sadducees. "And after that they durst not ask Him any [question at all]"-neither party could; both being for the time utterly foiled.

The Great Commandment (Mr 12:28-34).

"But when the Pharisees had heard that He had put the Sadducees to silence, they were gathered together" (Mt 22:34).

Matthew Henry's Concise Commentary

12:18-27 A right knowledge of the Scripture, as the fountain whence all revealed religion now flows, and the foundation on which it is built, is the best preservative against error. Christ put aside the objection of the Sadducees, who were the scoffing infidels of that day, by setting the doctrine of the future state in a true light. The relation between husband and wife, though appointed in the earthly paradise, will not be known in the heavenly one. It is no wonder if we confuse ourselves with foolish errors, when we form our ideas of the world of spirits by the affairs of this world of sense. It is absurd to think that the living God should be the portion and happiness of a man if he is for ever dead; and therefore it is certain that Abraham's soul exists and acts, though now for a time separate from the body. Those that deny the resurrection greatly err, and ought to be told so. Let us seek to pass through this dying world, with a joyful hope of eternal happiness, and of a glorious resurrection.