Deuteronomy 22:30

30 A man must not marry his father's wife; he must not dishonor his father in this way.

Deuteronomy 22:30 Meaning and Commentary

Deuteronomy 22:30

A man shall not take his father's wife
Not marry her, whether his own mother, or a stepmother; or even, as Aben Ezra thinks, anyone that was deflowered by his father. Jarchi interprets it of his father's brother's wife, which he was obliged to marry by virtue of the law in ( Deuteronomy 25:5 )

nor discover his father's skirt;
or lie with her his father had thrown his skirt over, or married; and which being the first, is mentioned here as a sample to all the rest forbidden ( Leviticus 18:7 ) or, as Bishop Patrick expresses it, is a "short memorandum", to make them careful to observe all the other laws respecting incestuous marriages and copulations there delivered.

Deuteronomy 22:30 In-Context

28 If a man meets a virgin who is not engaged to be married and forces her to have sexual relations with him and people find out about it,

29 the man must pay the girl's father about one and one-fourth pounds of silver. He must also marry the girl, because he has dishonored her, and he may never divorce her for as long as he lives.

30 A man must not marry his father's wife; he must not dishonor his father in this way.