Didymus the Blind
Catena Aurea · Johannesevangelium 15
Joh 15, Verses 26–27English original
But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall testify of me: And ye also shall bear witness, because ye have been with me from the beginning.
(ut sup.) He does not say, from God, or, from the Almighty, but, from the Father: because though the Father and God Almighty are the same, yet the Spirit of truth properly proceeds from God, as the Father, the Begetter. The Father and the Son together send the Spirit of truth: He comes by the will both of the Father and the Son.