Mark 10:8

New International Version

and the two will become one flesh.’ So they are no longer two, but one flesh.

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In this same way, husbands ought to love their wives as their own bodies. He who loves his wife loves himself.

That is why a man leaves his father and mother and is united to his wife, and they become one flesh.

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.”

Therefore what God has joined together, let no one separate.”