Truly, then, the Scripture declared, which says, First of all believe that there is one God, who has established all things, and completed them, and having caused that from what had no being, all things should come into existence (Irenaeus, Against Heresies, 4.20.2)
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I have also largely demonstrated, that the Word, namely the Son, was always with the Father; and that Wisdom also, which is the Spirit, was present with Him, anterior to all creation, He declares by Solomon: God by Wisdom founded the earth, and by understanding has He established the heaven. By His knowledge the depths burst forth, and the clouds dropped down the dew. Proverbs 3:19-20 And again: The Lord created me the beginning of His ways in His work: He set me up from everlasting, in the beginning, before He made the earth, before He established the depths, and before the fountains of waters gushed forth; before the mountains were made strong, and before all the hills, He brought me forth. And again: When He prepared the heaven, I was with Him, and when He established the fountains of the deep; when He made the foundations of the earth strong, I was with Him preparing [them]. I was He in whom He rejoiced, and throughout all time I was daily glad before His face, when He rejoiced at the completion of the world, and was delighted in the sons of men. Proverbs 8:27-31. There is therefore one God, who by the Word and Wisdom created and arranged all things (Irenaeus, Against Heresies, 4.20.3–4)
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Therefore the Son of the Father declares [Him] from the beginning, inasmuch as He was with the Father from the beginning (Irenaeus, Against Heresies, 4.20.7)
As we saw in the previous post, Irenaeus sees the Father as the self-existant God, this God established all things, bringing them into existence ex-nihilo. Irenaues also says that the Son, and Spirit, was “always with the Father,” prior to all creation. The Son was with God from the beginning. So far, what Irenaeus is saying seems to be compatible with both a subordinationist theology and a trinitarian theology. The Son is with the Father “from the beginning,” meaning the beginning of creation, but not necessarily from eternity. Irenaeus’s use of Proverbs 8 seems to imply the contrary.