1 Corinthians 6:15

6:15 Do you not know that your bodies are members of Christ? Should I take the members of Christ and make them members of a prostitute? Never!

1 Corinthians 7:15

7:15 But if the unbeliever wants a divorce, let it take place. In these circumstances the brother or sister is not bound. God has called you in peace.

1 Corinthians 10:21

10:21 You cannot drink the cup of the Lord and the cup of demons. You cannot take part in the table of the Lord and the table of demons.