Acts 15:20
Instead, we should write and tell them to abstain from food polluted by idols, from sexual immorality, from the meat of strangled animals, and from blood.

Leviticus 18:5
Keep My statutes and My judgments, for the man who does these things will live by them. I am the LORD.

Leviticus 18:7
You must not expose the nakedness of your father by having sexual relations with your mother. She is your mother; you must not have sexual relations with her.