God conveys unmerited Grace on all of us, but He does not impose it on us. Grace can, and is too often rejected by those who refuse to cooperate with it. Read your Bible.
If God desires a man to have grace, that man will have grace.
RCs presume they are stronger than the will of God and the actions of the Holy Spirit.
Utter hubris.
Scripture says grace is free and unmerited. Read Ephesians 1 and 2 and learn who is stronger — God or man.