Tertullian

This power and disposition of the divine intelligence is set forth also in the Scriptures under the name of sophia, "wisdom," for what can be better entitled to the name of wisdom than the reason or the Word of God? Listen therefore to wisdom herself, constituted in the character of a Second Person: "At the first the Lord created me as the beginning of his ways, with a view to his own works, before he made the earth, before the mountains were settled; moreover, before all the hills he begat me"—that is to say, he created and generated me in his own intelligence.… By proceeding from himself he became his first-begotten Son, because begotten before all things; and his only-begotten also, because alone begotten of God, in a way peculiar to himself, from the womb of his own heart.