Christ's sacrifice defeats Satan's temptations, giving believers victory even in suffering.
Dwight L. Moody said that one of the happiest men he ever knew was a man in Dundee, Scotland, who had fallen and broken his back when a boy of fifteen. He had lain on his bed for forty years and could not be moved without a good deal of pain. Probably not a day had passed in all those years without acute suffering. But day after day the grace of God had been granted him, and when Mr. Moody was in his room it seemed as if he was as near heaven as he could get on earth. When Mr. Moody saw him, he thought he must be beyond the reach of the tempter, and he asked him, "Doesn't Satan ever tempt you to doubt God and to think that He is a hard master?" "Oh, yes," he said, "he does try to tempt me. I lie here and see my old schoolmates driving along, and Satan says, 'If God is so good, why has He kept you here all these years? You might have been a rich man, riding in your carriage.' Then I see a man, who was young when I was, walk by in perfect health, and Satan whispers, 'If God loved you, couldn't He have kept you from breaking your back?' " "And what do you do when Satan tempts you?" "Ah, I just take him to Calvary, and I show him Christ, and I point out those wounds in His hands and feet and side, and say, 'Doesn't He love me?' The fact is Satan got such a scare there nineteen hundred years ago that he cannot stand it; he leaves me every time." That bedridden saint of God did not have much trouble with doubts; he was too full of the grace of God.