For there it is, written in the first book of Moses: “God created man in his own image, in the image of God he created him; male and female he created them. And God blessed them, and God said to them, ‘Be fruitful and multiply, and fill the earth and subdue it’ ” [Gen. 1:27–28].
There it is; these are not my words nor those of any other man, but God’s Word. This is the way he created and ordained it, and he who will not believe it, let him leave it. Moreover, the daily birth and arrival of all men proves that God wants his creation and ordinance, the holy estate of matrimony, to be maintained, in that little men and women are born and begin to grow up every day.
So every single one of us must declare and confess that we have not made or created ourselves; nor can we do it, neither could our parents do it. Who, then? The almighty, eternal God, the creator of all things, who first created and ordained little men and women for the marriage estate, he created us too for this estate. For I must freely confess and declare that I was created a male child, another a female child; I must confess that I am not a stone or a stick, but rather born and created a human being, man or woman. No man in the whole world, from the first to the latest, can say anything else. The people, especially the papists, are still raging and fuming beyond all bounds against this glorious creation of God, as if it should not exist. And if it were in the pope’s hand and power to create men, it would surely not exist; for he would not create or allow a single woman to exist in the whole world. What would happen then? Human beings would pass away. For it is certain that nobody is born without a mother; but what is born comes from the mother. And just as Adam did not make himself, but was created by God, so all men must be created by God in the womb and there sustained and later be born with God’s help into the world. (“Sermon at Marriage of Sigismund von Luindenau, 1545” Luther’s Works, v. 51, p.358-359)