Augustine of Hippo — as excerpted in the Catena Aurea on John 6:41-46

“(de Prædest. Sanctorum, c. viii) Or thus; When a schoolmaster is the only one in a town, we say loosely, This man teaches all here to read; not that all learn of him, but that he teaches all who do learn. And in the same way we say that God teaches all men to come to Christ: not that all do come, but that no one comes in any other way.”