Coming back to Paul we may adopt for guidance the two-fold aspect in which the eschatological function of the Spirit appears in his teaching. On the one hand the Spirit is the resurrection-source, on the other He appears as the substratum of the resurrection-life, the element, as it were, in which, as in its circumambient atmosphere the life of the coming aeon shall be lived. He produces the event and in continuance underlies the state which is the result of it. He is Creator and Sustainer at once, the Creator Spiritus and the Sustainer of the supernatural state of the future life in one.
The Pauline Eschatology (Phillipsburg, NJ; P&R Publishing, 1994), 163.