Cross reference
Mark 10:7
7 on this account shall a man leave his father and mother, and shall cleave unto his wife,
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 5:31
31 `for this cause shall a man leave his father and mother, and shall be joined to his wife, and they shall be -- the two -- for one flesh;'
Matthew 19:5-6
5 and said, For this cause shall a man leave father and mother, and cleave to his wife, and they shall be -- the two -- for one flesh?
6 so that they are no more two, but one flesh; what therefore God did join together, let no man put asunder.'