The main problem with those who deny the existence of God is not intellectual. It is not because of insufficient information, or that God's manifestation of himself in nature has been obscured. The atheists' problem is not that they cannot know God, rather it is they do not want to know him. Man's problem with the existence of God is not an intellectual problem; it is a moral problem." For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men - Rom. 1:18"
R. C. SproulWe are able to persevere only because God works within us, within our free wills. And because God is at work in us, we are certain to persevere. The decrees of God concerning election are immutable. They do not change, because He does not change. All whom He justifies He glorifies. None of the elect has ever been lost.
R. C. Sproul