Albert Barnes Commentary Job 33:30

"To bring back his soul from the pit, That he may be enlightened with the light of the living." — Job 33:30 (ASV)

To bring back his soul from the pit - To keep him from descending to the grave, and to the dark world beneath. He takes these methods of warning people so that they may not bring destruction on themselves. See Job 33:18.

To be enlightened with the light of the living - That he may still enjoy life, and not descend to the world of shades.