And the man said: This one, at last, is bone of my bone and flesh of my flesh; this one will be called “woman,” for she was taken from man. This is why a man leaves his father and mother and bonds with his wife, and they become one flesh.
Genesis 2:23-24 HCSB
When a man and woman come together in marriage, they become one being. Two as one is stronger than two as two; and together with the Lord the three are unbreakable, for the Lord’s love will never fail.