The gift is inseparable from the Giver

The gift which is being bestowed here [in salvation] is never at any time separable from its Giver. It partakes of the character of power, in so far as God himself enters the arena and remains in the arena with it. Thus personal address (Anspruch), obligation (Verpflichtung) and service (Dienst) are indissolubly bound up with the gift. When God enters the arena, our experience is that he maintains his lordship even in his giving; indeed it is his gifts which are the very means by which he subordinates us to his lordship and makes us responsible beings.—Kaesemann, “The Righteousness of God,” 174, cited in J. M. G. Barclay, Paul and the Gift, 499