Reference for Isaiah 45:26

To summarize: It is clear that Job's suffering had nothing to do with any sin or punishment; he was guiltless. As God Himself had testified: ...there is no-one like him on earth; such a sincere and upright man; God-fearing; one who shuns wrongdoing. It was in fact a trial designed to determine the truth about his piety; to see whether he would remain righteous even in poverty. Neither Job nor his three friends were aware of this until it was revealed to them by Elihu. God agrees to the test. All of Job's possessions are handed over to Satan; only Job himself was to remain untouched. As Maimonides explains (Guide for the Perplexed, Part 3, Chapter 22):
There are people who though unshaken by the loss of their money, would be horrified by the death of their children, driven to death worrying about it; there are others who would not be broken even by the loss of their children, but who are unable to face personal physical pain.