Deuteronomy 22:30

30 A man may not marry his father's ex-wife - that would violate his father's rights.

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 When a man comes upon a virgin who has never been engaged and grabs and rapes her and they are found out,

29 the man who raped her has to give her father fifty pieces of silver. He has to marry her because he took advantage of her. And he can never divorce her.

30 A man may not marry his father's ex-wife - that would violate his father's rights.