Leviticus 18:7

7You shall not uncover the 18:7 The father’s nakedness is a reference to his wife in her role as his sexual partner, i.e. the nakedness that belongs to him alone by virtue of their marriage (cf 1 Cor 7:4). Otherwise, the literal meaning would refer to intimate relations with the father himself, including homosexuality. The text itself states that this is not the meaning, especially in 20:11a (The man who lies…has uncovered his father’s nakedness).nakedness of your father, that is, the nakedness of your mother. She is your mother. You shall not uncover her nakedness.