Article Three of the Augsburg Confession:
“Our churches teach that the Word, that is, the Son of God, assumed a human nature in the womb of the Blessed Virgin Mary. So there are two natures – the divine and the human – inseparably joined in one person. There is one Christ, true God and true man, who has born of the Virgin Mary, truly suffered, was crucified, died, and was buried. He did this to reconcile the Father to us and to be a sacrifice, not only for original guilt, but also for all actual sins of mankind…”
Art: “Christ Pantocrator” at Saint Catherine’s Monastery.