1 Corinthians 6:16

16Or do you not know that he who is joined
Or  who holds fast (compare Genesis 2:24 and Deuteronomy 10:20); also verse 17
to a prostitute becomes one body with her? For, as it is written, b“The two will become one flesh.”

Ephesians 5:31

31 cTherefore a man shall leave his father and mother and hold fast to his wife, and dthe two shall become one flesh.”
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