You wrote:
“I have his grace when I sin and repent and confess it. It never goes away. Does yours?”
If you reject God by sinning how can you keep all the grace that you once had? Rejecting God would entail rejecting His gifts as well.
Are you actually claiming a man can hold on to all the grace God has given him even when he rejects God? What is the point of repenting and confession then?
I know Catholics believe differently regarding God’s grace. My husband was Catholic and when he became born again, he was relieved to learn that God’s grace would never leave him. It wasn’t going to bop in and out of his life because he sinned. ALL have sinned and come short of the glory of God. When you sin, you repent and confess your sin and God is quick to forgive it. He doesn’t remove His grace because you sinned and repented. Now if one continues in sin and refuses God’s grace, that’s another thing.