1 John, the disciple of the Lord, preaches this faith, and seeks, by the proclamation of the Gospel, to remove that error which by Cerinthus had been disseminated among men, and a long time previously by those termed Nicolaitans, who are an offset of that “knowledge” falsely so called, that he might confound them, and persuade them that there is but one God, who made all things by His Word; and not, as they allege, that the Creator was one, but the Father of the Lord another; and that the Son of the Creator was, forsooth, one, but the Christ from above another, who also continued impassible, descending upon Jesus, the Son of the Creator, and flew back again into His Pleroma; and that Monogenes was the beginning, but Logos was the true son of Monogenes; and that this creation to which we belong was not made by the primary God, but by some power lying far below Him, and shut off from communion with the things invisible and ineffable.
The disciple of the Lord therefore desiring to put an end to all such doctrines, and to establish the rule of truth in the Church, that there is one Almighty God, who made all things by His Word, both visible and invisible; showing at the same time, that by the Word, through whom God made the creation, He also bestowed salvation on the men included in the creation; thus commenced His teaching in the Gospel: “In the beginning was the Word, and the Word was with God, and the Word was God.
The same was in the beginning with God. All things were made by Him, and without Him was nothing made. What was made was life in Him, and the life was the light of men. And the light shines in darkness, and the darkness comprehended it not.” “All things,” he says, “were made by Him;” therefore in “all things” this creation of ours is [included], for we cannot concede to these men that [the words] “all things” are spoken in reference to those within their Pleroma. For if their Pleroma do indeed contain these, this creation, as being such, is not outside, as I have demonstrated in the preceding book; but if they are outside the Pleroma, which indeed appeared impossible, it follows, in that case, that their Pleroma cannot be “all things:” therefore this vast creation is not outside [the Pleroma].
Source: Adversus haereses (New Advent)