(20) His uncle's wife.--See Leviticus 18:14.

Verses 20, 21. - They shall die childless;... they shall be childless. "It cannot be supposed that a perpetual miracle was to be maintained through all the ages of Israel's history; but the meaning evidently is that the children of such marriages should be reckoned, not to their actual father, but to the former husband of the woman. In the strong feeling of the Israelites in regard to posterity, this penalty seems to have been sufficient" (Gardiner).

20:10-27 These verses repeat what had been said before, but it was needful there should be line upon line. What praises we owe to God that he has taught the evil of sin, and the sure way of deliverance from it! May we have grace to adorn the doctrine of God our Saviour in all things; may we have no fellowship with unfruitful works of darkness, but reprove them.And if a man shall lie with his uncle's wife,.... His uncle being dead, and he marry her, which is forbidden, Leviticus 18:14,

he hath uncovered his uncle's nakedness: his wife's, which was his, and therefore the kindred too near for a man to marry in, and such a copulation must be incestuous:

they shall bear their sin; "both" of them, as the Vulgate Latin, as before, Leviticus 20:19; the punishment of it, as follows:

they shall be childless; which Jarchi and other Jewish writers interpret, if they had any children at this time, that is, by a former marriage, they should die and be buried before them, which was reckoned a great punishment, see Jeremiah 22:30.