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.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: ut sup.