Leviticus 18:8

18:8 You must not have sexual intercourse with your father’s wife; she is your father’s nakedness. ¹ 

Leviticus 18:16

18:16 You must not have sexual intercourse with your brother’s wife; she is your brother’s nakedness. ² 

[18:8]  ¹ tn Heb “the nakedness of your father she is.” See the note on v. 7 above. This law refers to another wife of the man’s father, who is not that man’s mother. The laws in the Pentateuch sometimes assume the possibility that a man may have more than one wife (cf., e.g., Deut 21:15-17).

[18:16]  ² sn Regarding the last clause, see the notes on vv. 7 and 10 above.