Adam Clarke on Job 23:10

But he knoweth the way that I take - He approves of my conduct; my ways please him. He tries me: but, like gold, I shall lose nothing in the fire; I shall come forth more pure and luminous. If that which is reputed to be gold is exposed to the action of a strong fire, if it be genuine, it will lose nothing of its quality, nor of its weight. If it went into the fire gold, it will come out gold; the strongest fire will neither alter nor destroy it. So Job: he went into this furnace of affliction an innocent, righteous man; he came out the same. His character lost nothing of its value, nothing of its lustre.