But he said to me, "My grace is sufficient for you, for my power is made perfect in weakness." Therefore I will boast all the more gladly about my weaknesses, so that Christ's power may rest on me.2 Corinthians 12:9
For I can do everything through Christ, who gives me strength.Philippians 4:13
Mark 16:16
Whoever believes and is baptized will be saved, but whoever does not believe will be condemned. Mark 16:16
If you believe you are saying his grace is enough. A person who does not believe is saying Jesus death and resurrection was not enough grace to cover my sins. One way or another every person will choose.
Today I have given you the choice between life and death, between blessings and curses. Now I call on heaven and earth to witness the choice you make. Oh, that you would choose life, so that you and your descendants might live! Deuteronomy 30:19