But he who is joined to the Lord is one spirit with Him.
1 Corinthians 6:17
Surrounding context
6:16 Or do you not know that he who is joined to a harlot is one body with her? For "the two," He says, "shall become one flesh."
6:17 But he who is joined to the Lord is one spirit with Him.
6:18 Flee sexual immorality. Every sin that a man does is outside the body, but he who commits sexual immorality sins against his own body.