Matthew 19:5
And said: therefore a man shall leave his father and his mother and hold fast to his wife, and the two shall become one flesh. The Genesis 2:24 quotation establishes the covenant of marriage as the creation of a new unity: two become one flesh. The leaving of father and mother and the cleaving to the wife are the two movements that constitute the marital covenant. The one-flesh union that results is the creation's vision of marriage's completeness.