Besides, the joy here mentioned arises from this, that there is nothing more calculated to increase our faith, than the knowledge of the providence of God; because without it, we would be harassed with doubts and fears, being uncertain whether or not the world was governed by chance. For this reason, it follows that those who aim at the subversion of this doctrine, depriving the children of God of true comfort, and vexing their minds by unsettling their faith, forge for themselves, a hell upon earth. For what can be more awfully tormenting than to be constantly racked with doubt and anxiety? And we will never be able to arrive at a calm state of mind until we are taught to repose with implicit confidence in the providence of God.

---commentary on Psalm 107:42