A.T. Robertson 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)

I am come a light (Εγω φως εληλυθα). As in 3:19; 9:5; 8:12; 12:35. Final clause (negative) also here (ινα μη μεινη, first aorist active subjunctive) as in 12:35. Light dispels darkness.