John 6:45-46

The murmuring Jews: V. 45. It is written in the prophets, And they shall be all taught of God. Every man, therefore, that hath heard and hath learned of the Father cometh unto Me. V. 46. Not that any man hath seen the Father save He which is of God, He hath seen the Father.

"No man can come to Me, except the Father draw him."

This fact Jesus substantiates by a passage from the prophets: They will all be taught by God, Is. 54, 13. Those that are taught of God, that have learned the lesson of their own inability and lack of strength, and therefore both hear the Father and in all things learn of Him, only they can come to faith in Christ. The Father uses no compulsion, but makes use of teaching only. He appeals to the reason and understanding, to the heart and the will of men, teaches and persuades and makes them willing.

And this is possible only because God incidentally illumines the heart. In that way the Father works the willingness, in that way man becomes eager to come to Jesus by faith in His atonement.

This is not to be understood as though there were any physical contact between God and man; the knowledge of God was not communicated directly, by immediate vision of God. There is only one Man who has received His Being directly from God and who is also in immediate communication with God; He is the one who has seen the Father. For that reason it is essential that a Christian believe the Word of Jesus without the slightest doubt, since His deity demands as much.