Albert Barnes Commentary Proverbs 13:9

"The light of the righteous rejoiceth; But the lamp of the wicked shall be put out." — Proverbs 13:9 (ASV)

Very beautiful in its poetry is the idea of the light rejoicing in its brightness (Job 38:7). Note also the distinction between the light and the lamp. The righteous ones have the true light in them. That which belongs to the wicked is only derived and temporary, and even that shall be extinguished before long. Compare a like distinction in John 1:8; John 5:35.