Saint John Damascene, De Fide Orthodoxa
''Likewise we believe also in one Holy Spirit, the Lord and giver of life . . . God existing and addressed along with Father and Son; uncreated, full, creative, all-ruling, all-effecting, all-powerful, of infinite power, Lord of all creation and not under any lord; deifying, not deified; filling, not filled; sharing in, not shared in; sanctifying, not sanctified; the intercessor, receiving the supplications of all; in all things like to the Father and Son; proceeding from the Father and communicated through the Son''