2 John, however, does himself put this matter beyond all controversy on our part, when he says, “He was in this world, and the world was made by Him, and the world knew Him not. He came unto His own [things], and His own [people] received Him not.” But according to Marcion, and those like him, neither was the world made by Him; nor did He come to His own things, but to those of another. And, according to certain of the Gnostics, this world was made by angels, and not by the Word of God. But according to the followers of Valentinus, the world was not made by Him, but by the Demiurge. For he (Soter) caused such similitudes to be made, after the pattern of things above, as they allege; but the Demiurge accomplished the work of creation. For they say that he, the Lord and Creator of the plan of creation, by whom they hold that this world was made, was produced from the Mother; while the Gospel affirms plainly, that by the Word, which was in the beginning with God, all things were made, which Word, he says, “was made flesh, and dwelt among us.”
Source: Adversus haereses (New Advent)