18 Then some Sadducees, who say there is no resurrection, came to Him; and they asked Him, saying: 19 "Teacher, Moses wrote to us that if a man's brother dies, and leaves his wife behind, and leaves no children, his brother should take his wife and raise up offspring for his brother. 20 Now there were seven brothers. The first took a wife; and dying, he left no offspring. 21 And the second took her, and he died; nor did he leave any offspring. And the third likewise. 22 So the seven had her and left no offspring. Last of all the woman died also. 23 Therefore, in the resurrection, when they rise, whose wife will she be? For all seven had her as wife." 24 Jesus answered and said to them, "Are you not therefore mistaken, because you do not know the Scriptures nor the power of God? 25 For when they rise from the dead, they neither marry nor are given in marriage, but are like angels in heaven. 26 But concerning the dead, that they rise, have you not read in the book of Moses, in the burning bush passage, how God spoke to him, saying, 'I am the God of Abraham, the God of Isaac, and the God of Jacob'? 27 He is not the God of the dead, but the God of the living. You are therefore greatly mistaken."
Matthew Henry's Commentary on Mark 12:18-27
Commentary on Mark 12:18-27
(Read Mark 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.