John Calvin on John 12:45

45. And he who seeth me. The word see is here taken for knowledge; for, in order to give true and thorough tranquillity to our consciences, which would otherwise have been constantly liable to various agitations, he sends us to the Father. The reason why the stability of faith is firm and secure is, that it is stronger than the world, and is above the world. “Pource qu’elle est plus forte que le monde, et pardessus le monde.” Now, when Christ is truly known, the glory of God shines in him, that we may be fully persuaded that the faith which we have in him does not depend on man, but that it is founded on the eternal God; for it rises from the flesh of Christ to his Divinity. And, if it be so, not only must it be fixed perpetually in our hearts, but it must likewise show itself boldly in the tongue, when it is necessary.