1 Corinthians 6:15-19 New International Version (NIV)

¹⁵ Do you not know that your bodies are members of Christ himself? Shall I then take the members of Christ and unite them with a prostitute? Never! ¹⁶ Do you not know that he who unites himself with a prostitute is one with her in body? For it is said, “The two will become one flesh.”^{[a] 17} But whoever is united with the Lord is one with him in spirit.^[b]

¹⁸ Flee from sexual immorality. All other sins a person commits are outside the body, but whoever sins sexually, sins against their own body. ¹⁹ Do you not know that your bodies are temples of the Holy Spirit, who is in you, whom you have received from God? You are not your own;