What does the Bible say about incest?

Leviticus 18:6“You must never have sexual relations with a close relative, for I am the Lord.”

Amos 2:7“They [God’s rebellious people] trample helpless people in the dust and shove the oppressed out of the way. Both father and son sleep with the same woman, corrupting my holy name.”

1 Corinthians 5:1I can hardly believe the report about the sexual immorality going on among you—something that even pagans don’t do. I am told that a man in your church is living in sin with his stepmother.