I sent you to reap that on which you bestowed no labor: other men labored, and you are entered into their labors.
All Commentaries on John 4:38 Go To John 4
Cornelius a Lapide
AD 1637
I have sent, &c. I have sent, i.e, I have desired and determined to send. An inchoate and destined, not a completed, action is signified. The Prophets, and teachers of the Law, and such as they, with great toil taught the uninstructed minds of the Jews the rudiments of the knowledge of God, and prepared them for the Christian harvest of righteousness and holiness. You, 0 ye Apostles, have entered into their labours, because ye shall convert the minds of the Jews prepared to receive Me.
Moreover Christ said this, that by the example of the Prophets, who sowed so laboriously, He might animate the Apostles to preach the gospel, which was more easy, and involved less toil. "Lest," as S. Chrysostom says, "they should be troubled as about to undergo the greatest burden, when they were sent to preach. They must think that the Prophets had had yet harder labour, even as sowing the seed is harder labour, and needs greater anxiety than reaping. As the Gloss says, "Unless the Jews had been prepared by the Prophets, they would not have listened to the Apostles."