For when he says, "That which was from the beginning," he touches upon the generation without beginning of the Son, who is co-existent with the Father. There was[,] then, a Word importing an unbeginning eternity; as also the Word itself, that is, the Son of God, who being, by equality of substance, one with the Father, is eternal and uncreate.
St. Clement of Alexandria (d. circa 215)
Commentary on 1 John