John Lightfoot on John 6:45

[And they shall be all taught of God.] Isaiah 54:13: "And all thy children shall be taught of the Lord." The 'children of Israel,' 'of Jerusalem,' and 'of Zion,' are very frequently mentioned by the prophets for those Gentiles that were to be converted to the faith: taught before of the devil, by his idols and oracles; but they should become the children of the church, and be taught of God.

The Rabbins do fondly apply these words of the prophet, when by thy children they understand the disciples of the wise men. "The disciples of the wise men multiply peace in the world; as it is written, 'All thy children shall be taught of God, and great shall be the peace of thy children.' Do not read, thy children; but thy builders."

But who were there among mortals that were more taught of men and less of God, being learned in nothing but the traditions of the fathers? He must be taught of the Father that would come to the Son; not of those sorry fathers: he must be taught of God, not those masters of traditions.