I have come into the world as a light, so that no one who believes in Me should remain in darkness.
46. I am come into the worm as a light. In order to render his disciples more bold and persevering, he proceeds still farther in maintaining the certainty of faith. And, first, he testifies that he came into the world to be a light, by which men might be delivered from darkness and errors; and, at the same time, he points out the means of...
We have here the honour Christ not assumed, but asserted, to himself, in the account he gave of his mission and his errand into the world. Probably this discourse was not at the same time with that before (for them he departed, Joh 12:36), but some time after, when he made another public appearance; and, as this evangelist records it, it was Christ's farewell sermon...
Commenting on John 12:44-50
He that rejecteth me,.... As the Messiah, with abhorrence and contempt, as many among the Jews did, who would not have him to reign over them, but sought to put him to death: and receiveth not my words; the doctrines of the Gospel, but disbelieves them, and denies them to be true, looking upon them as the doctrines of a mere man, and an impostor...