Albert Barnes Commentary John 6:45

"It is written in the prophets, And they shall all be taught of God. Every one that hath heard from the Father, and hath learned, cometh unto me." — John 6:45 (ASV)

In the prophets.Isaiah 54:13. A similar sentiment is found in Micah 4:1-4 and Jeremiah 31:34. However, by the prophets, here, is meant the book of the prophets, and it is probable that Jesus referred only to the passage in Isaiah, as this was the usual way of quoting the prophets.

Shall be all taught of God. This explains the preceding verse. It is by the teaching of his Word and Spirit that men are drawn to God. This shows that it is not compulsory, and that there is no obstacle in the way but a strong, voluntary ignorance and unwillingness.

Every man (Matthew 11:27).