Why does man suffer according to the Book of Job?

AnswerAccording to the Book of Job, man suffers because God wills it.

In this story, God tells Satan to harm any of Job's family and rob him of his possessions, simply to prove whether Job would curse God for his part in these disasters. When this plot failed, God told Satan to try even harder, even to cause personal harm to Job, as long as he did not kill him.