Cross reference
Mark 10:8
8 and they shall be -- the two -- for one flesh; so that they are no more two, but one flesh;
1 Corinthians 6:16
16 have ye not known that he who is joined to the harlot is one body? `for they shall be -- saith He -- the two for one flesh.'
Genesis 2:24
24 therefore doth a man leave his father and his mother, and hath cleaved unto his wife, and they have become one flesh.
Ephesians 5:28
28 so ought the husbands to love their own wives as their own bodies: he who is loving his own wife -- himself he doth love;