Matthew 22:24

Saying, Teacher, Moses said, If a man die, having no children, his brother shall marry his wife, and raise up seed to his brother. Now there were with us seven brethren: and the first married and deceased, and having no seed, left his wife unto his brother; in like manner the second also, and the third, unto the seventh. And after them all, the woman died. In the resurrection therefore whose wife shall she be of the seven? for they all had her.

First, note the question on its merits, or DEMERITS! As Matthew Henry said, "The seventh who ventured last to marry the widow (many a one would say) was a bold man!"[4] The possibility of such a thing happening must be set down as remote. Like all fancy arguments trumped up as an objection to God's word, the whole proposition, on its face, is a lie, designed to support a lie, namely that there is no resurrection.

Yet Christ allowed the question to stand, at least for the moment, because it COULD have happened. The Sadducees' statement of Moses' position on the Levirate marriage was correct, as witnessed by the case of Boaz and Ruth (from the Book of Ruth). Yet, in the reply that followed at once, Christ, as always, resolved the issue, not on the basis of what Moses said, but upon what God said, affirming, in effect, that it was not Moses but God whom they were quoting.