We acknowledge one God, uncreated, eternal, invisible, impassable, incomprehensible, illimitable, who is apprehended by the understanding only and the reason, who is encompassed by light, and beauty, and spirit, and power ineffable, by whom the universe has been created through His Logos, and set in order, and is kept in being…
The Son of God is the Logos of the Father, in idea and in operation; for after the pattern of Him and by Him were all things made, the Father and the Son being one. And, the Son being in the Father and the Father in the Son, in oneness and power of spirit, the understanding and reason (νοῦς καὶ λόγος) of the Father is the Son of God. ..He is the first product of the Father, not as having been brought into existence (for from the beginning, God, who is the eternal mind [νοῦς], had the Logos in Himself, being from eternity instinct with Logos [λογικός]); but inasmuch as He came forth to be the idea and energizing power of all material things, which lay like a nature without attributes, and an inactive earth, the grosser particles being mixed up with the lighter.
The prophetic Spirit also agrees with our statements. “The Lord,” it says, “made me, the beginning of His ways to His works.” The Holy Spirit Himself also, which operates in the prophets, we assert to be an effluence of God, flowing from Him, and returning back again like a beam of the sun.