The incarnation has often been described as “The Great Exchange,” whereupon God took on human form so that we might participate in God's divine life (through the Holy Spirit). In a sermon on the nativity by John Chrysostom, this is how he describes the ineffable beauty of the incarnation:
The Ancient of Days has become an infant. He who sits upon the sublime and heavenly throne now lies in a manger. And he who cannot be touched, who is without complexity, incorporeal, now lies subject to human hands. He who has broken the bonds of sinners is now bound by an infant’s bands. But he has decreed that the ignominy shall become honor, infamy be clothed with glory, and abject humiliation the measure of his goodness. For this he assumed my body, that I may become capable of his word; taking my flesh, he gives me his spirit; and so he bestowing and I receiving, he prepares for me the treasure of life.
John Chrysostom, “The Joys of Christmas”, Quoted in Vassilios Papavassiliou, Meditations for Advent; Preparing for Christ's Birth.
