1 Corinthians 6:16
“What? know ye not that he which is joined to an harlot is one body? for two, saith he, shall be one flesh.”
And God hath both raised up the Lord, and will also raise up us by his own power.
Know ye not that your bodies are the members of Christ? shall I then take the members of Christ, and make them the members of an harlot? God forbid.
What? know ye not that he which is joined to an harlot is one body? for two, saith he, shall be one flesh.
But he that is joined unto the Lord is one spirit.
Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.”
“For this is the covenant that I will make with the house of Israel after those days, saith the Lord; I will put my laws into their mind, and write them in their hearts: and I will be to them a God, and they shall be to me a people:”
“Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.”
“Know ye not that ye are the temple of God, and that the Spirit of God dwelleth in you?”
“For this cause shall a man leave his father and mother, and shall be joined unto his wife, and they two shall be one flesh.”