Lactantius

“ Therefore the Holy Spirit of God, descending from heaven, chose the holy Virgin, that He might enter into her womb. [1] But she, being filled by the possession [2] of the Divine Spirit, conceived; and without any intercourse with a man, her virgin womb was suddenly impregned. But if it is known to all that certain animals are accustomed to conceive [3] by the wind and the breeze, why should any one think it wonderful when we say that a virgin was made fruitful by the Spirit of God, to whom whatever He may wish is easy? ”

“ And also, when He shall come again with majesty and glory to judge every soul, and to restore the righteous to life, then He shall truly have the government of the whole earth: then, every evil having been removed from the affairs of men, a golden age (as the poets call it) , that is, a time of righteousness and peace, will arise. ”

“ For since it is so arranged by God that the same Christ should twice come to the earth, once to announce to the nations the one God, then again to reign, why do they who did not believe in His first advent believe in the second?
But the prophet comprises both His advents in few words. Behold, he says, one like the Son of man coming with the clouds of heaven. He did not say, like the Son of God, but the Son of man, that he might show that He had [14] to be clothed with flesh on the earth, that having assumed the form of a man and the condition of mortality, He might teach men righteousness ”