1 Corinthians 6:16-20

It is written in the Scriptures, “The two will become one body.” So you should know that anyone who joins with a prostitute becomes one body with the prostitute. But the one who joins with the Lord is one spirit with the Lord. So run away from sexual sin. Every other sin people do is outside their bodies, but those who sin sexually sin against their own bodies. You should know that your body is a temple for the Holy Spirit who is in you. You have received the Holy Spirit from God. So you do not belong to yourselves, because you were bought by God for a price. So honor God with your bodies.