Mark 10:7
For this reason [i.e., since he made one woman for one man] a man will leave [the home of] his father and mother and will cling to his wife
Ephesians 5:31
[Gen. 2:24 says], "For this reason a man will leave [the home of] his father and mother, and will cling to his wife, [so that] the two will become one flesh [i.e., united in such a close relationship, as to practically constitute one body]."
Matthew 19:5-6
He said [Gen. 2:24], 'For this reason [i.e., since He made one woman for one man], a man will leave [the home of] his father and mother and will cling to his wife, [so that] the two of them will [then] become one flesh [i.e., united in such a close relationship as to constitute one body]?'