1 Corinthians 6:15-19

Surely you know that your bodies are parts of Christ himself. So I must never take parts of Christ and join them to a prostitute! It is written in the Scriptures, “The two people will become one body.” So you should know that a man who joins himself with a prostitute becomes one with her in body. But the one who joins himself with the Lord is one with the Lord in spirit. So run away from sexual immorality. Every other sin that a person does is outside the body. But those who are sexually immoral sin against their own bodies. You should know that your body is a temple for the Holy Spirit. The Holy Spirit is in you. You have received the Holy Spirit from God. You do not own yourselves.