God’s plan from the beginning has been for one man and one woman to become one flesh in the covenant of marriage. When no suitable helper was found for Adam, the Lord God made a woman (Gen. 2:20, 22). She was bone of his bone and flesh of his flesh, and the two became one flesh (Gen. 2:23–24). God made the man and the woman to fit together, quite literally. In the creation, God intended for man and woman to exist in a state in which they could enjoy one another in an exclusive, lifelong “one flesh” union that would result in “filling the earth.” This kind of union only comes about in a heterosexual marriage.