Martin Luther

"omnipotence and foreknowledge of God, I repeat, utterly destroy the doctrine of 'free-will'...doubtless it gives the greatest possible offense to common sense or natural reason, that God, Who is proclaimed as being full of mercy and goodness, and so on, should of His own mere will abandon, harden and damn men, as though He delighted in the sins and great eternal torments of such poor wretches. it seems an iniquitous, cruel, intolerable thought to think of God; and it is this that has been such a stumbling block to so many great men down through the ages. And who would not stumble at it? I have stumbled at it myself more than once, down to the deepest pit of despair, so that I wished I had never been made a man. (That was before I knew how health-giving that despair was, and how close to grace.)" Luther B of the W pg. 217