Epiphanius Ancoratus 8

Each of the titles are singularly unique and cannot be duplicated. The Father is the Father and cannot be compared with any other. Nor is He paired together with another father so we end up with two gods. The Only-Begotten Son is True God from True God, not having the Father’s name nor is He foreign to the Father. The existence of the Only-Begotten is united to the Father’s existence so that the name of the Son is also singularly unique. He is God from God so that the Father and the Son may be called one God. The Holy Spirit is unique who does not have the name, “Son,” and does not have the name “Father,” and is called “Holy Spirit,” and is not foreign to the Father. For the Only-Begotten Himself says: The Spirit of the Father, as well as, who proceed forth from the Father and will take from what is mine (Jn. 16.14, 15) so it cannot be assumed the Spirit is foreign to the Father and the Son but sharing the same Being, sharing the same Godhead, the same divine Spirit, the Spirit of Truth, the Spirit of God, the Spirit, the Advocate, called “singularly unique,” where there is no way He can be compared with or matched to any other spirit. He is not called by the name of the Son and He is not named by the name of the Father in order that from the very beginning the names are singularly unique and not the same as any other, with the exception of God: That is, God in the Father, God in the Son, and God in the Holy Spirit, who is of (and with) God and God. For the Spirit of God, including the Spirit of the Father and the Spirit of the Son, not according to some separate parts fused together just as the body and soul are in us, but He is in the midst of the Father and the Son, from the Father and the Son and is third in naming. For it says, “Go forth and baptise in the name of the Father, Son and Holy Spirit.” If the Father baptises in His own name, in the name of God, and the perfect seal in God’s own name has been sealed in us, and Christ baptises in His own name, in the name of God, and the perfect seal in God’s own name has been sealed in us, who would be so reckless to wage war against their own soul by saying the Spirit is foreign to the Godhead? For if in the name of God the Father and in the name of God the Son and in the name of God the Holy Spirit, then there is one seal of the Trinity and there is one power of the Godhead in the Trinity. If God is One and what is created is not God by what reason are the two connected to the one in the perfect seal? At least then, the Father has the authority of a King and we are sealed with a seal in His name, the rest do not have the authority of a king! We are then the ones at this time who serve the elements of created things. This is according to the thinking of those who blaspheme where they say the name of the Father alone was not able to save. The One who created added two others to Himself so they take His divinity giving them power so that they might be able to save the one sealed by Him. Thus He might be able to take hold and redeem the person He created from their sin.