1 Corinthians 6

15 Do you not know that your bodies are members of Christ? Therefore, shall I take away the members of Christ and make them members of a prostitute? May it never be! 16 Or do you not know that the one who joins himself to a prostitute is one body with her? For it says, "The two will become one flesh."*A quotation from Gen 2:2417 But the one who joins himself to the Lord is one spirit with him.