Job 33:25

His flesh shall be fresher than a child’s - Margin, “childhood.” The meaning is obvious. He would be restored again to health. The calamity which had been brought upon him for purposes of discipline, would be removed. This was the theory of Elihu in regard to afflictions, and he undoubtedly meant that it should be applied to Job. If he would now, understanding the nature and design of affliction, turn to God, he would be recovered again, and enjoy the health and rigor of his youth. We are not to suppose that this is universally true, though it is undoubtedly often a fact now, that if those who are afflicted become truly penitent, and call upon God, the affliction will be removed. It will have accomplished its object, and may be withdrawn. Hence, they who pray that their afflictions may be withdrawn, should first pray that they may accomplish on their own hearts the effect which God designs, producing in them penitence, deadness to the world, and humiliation, and then that his hand may be withdrawn.

He shall return to the days of his youth - That is, to health and rigor.