Genesis 2:24, “For this reason a man will leave his father and mother and be united to his wife, and they will become one flesh.” When describing the covenant of marriage between a man and a woman, the Bible is specific to use language that connects the two. This is a different concept than that used to describe a family of animals in Genesis 8:19. The concept here is to ensure the uniqueness of mankind, the man and woman become one, when they have children they join in that unique “oneness” and that makes this concept so unique is that our Creator is also one as described in Deuteronomy 6:4. Because mankind is made in the image of our Creator, language is used that is analogous with the language used to describe our Creator.