Albert Barnes Commentary John 12:46

"I am come a light into the world, that whosoever believeth on me may not abide in the darkness." — John 12:46 (ASV)

A light unto the world (John 13:12; John 1:9; John 3:19).

Walk in darkness. In gross and dangerous errors. Darkness represents error as well as sin (John 3:19; 1 John 1:5). It is also used to denote the state when the comforts of religion are withdrawn from the soul (Isaiah 8:22; Joel 2:2; Isaiah 59:9; John 8:12).