So if someone gave you a bag of cow manure, you can either accept it or reject it?
Even if a gift is free, one is not required to accept it.
Acceptance is needed for validity of a gift.
One can can go back on his word or promise of acceptance and thus void the gift.
Oh good grief - we’re talking about grammar.
Canon 6 of the Council of Orange
If anyone says that God has mercy upon us when, apart from his grace, we believe, will, desire, strive, labor, pray, watch, study, seek, ask, or knock, but does not confess that it is by the infusion and inspiration of the Holy Spirit within us that we have the faith, the will, or the strength to do all these things as we ought; or if anyone makes the assistance of grace depend on the humility or obedience of man and does not agree that it is a gift of grace itself that we are obedient and humble, he contradicts the Apostle who says, “What have you that you did not receive?” (1 Cor. 4:7), and, “But by the grace of God I am what I am” (1 Cor. 15:10).