Leviticus 18:3-7

Forbidden Sexual Practices

³So do not act like the people in Egypt, where you used to live, or like the people of Canaan, where I am taking you. You must not imitate their way of life. ⁴You must obey all my regulations and be careful to obey my decrees, for I am the Lord your God. ⁵If you obey my decrees and my regulations, you will find life through them. I am the Lord.

⁶“You must never have sexual relations with a close relative, for I am the Lord.

⁷“Do not violate your father by having sexual relations with your mother. She is your mother; you must not have sexual relations with her.