For the Arminian, salvation is possible for all but certain for none. In the Calvinist position, salvation is sure for God's elect.
R. C. SproulIf there is one single molecule in this universe running around loose, totally free of God’s sovereignty, then we have no guarantee that a single promise of God will ever be fulfilled.
R. C. SproulThe 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. Sproul