Augustine of Hippo

The Son of God, who is also the Son of man, our Lord Jesus Christ, born of the Father without mother, created every single day; born of his mother without father, he consecrated this particular day [Christmas Day]; invisible in his divine birth, visible in his human one, in each of them wonderful. Thus it is difficult to judge about which of the two the prophet is more likely to have prophesied, "Who shall tell the tale of his begetting?"—whether of that one in which, never not born, he has the Father co-eternal with himself; or of this one in which, born at a particular time, he had already made the mother of whom he would be made; whether of that one where he was always born, since he always was. Who, after all, will tell the tale of how light was born from light, and they were both one light; how God was born from God, and the number of gods did not increase?