“God is the Creator of the human being, and simultaneously also the Inaugurator of sex and of sexual difference. This difference did not result from sin; it existed from the very beginning, it has its basis in creation, it is a revelation of God’s will and sovereignty, and is therefore wise and holy and good. Therefore, no one may misconstrue or despise this sexual difference, either within one’s own identity or in that of another person. It has been willed by God and grounded in nature. It was then, and still is, willed by God; he is the sovereign Designer of sex; man and woman have God to thank not only for their human nature, but also for their different sexes and natures. Both are good, even as they both come forth from God’s hand. Together in mutual fellowship they bear the divine image. God himself is the Creator of duality-in-unity.”
–Herman Bavinck, The Christian Family, p. 5