Ephesians 5:31

“For this reason a man will leave his father and mother and be united to his wife, and the two will become one flesh.”

Note Genesis 2:24 (see also LXX)

BSB · Berean Standard Bible
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.
KJV · King James Version
“For this cause a man will leave his father and mother and will be joined to his wife. Then the two will become one flesh.”
WEB · World English Bible
For this cause shall a man leave his father and mother, and shall cleave to his wife; and the two shall become one flesh.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

Ephesians 5:31
Genesis 2:24; Matthew 19:5; Mark 10:7, 8; 1 Corinthians 6:16