John Gill Commentary John 4:37

"For herein is the saying true, One soweth, and another reapeth." — John 4:37 (ASV)

And herein is that saying true
This verifies that proverbial expression so much in use, and which may be applied to different persons and cases:

one soweth, and another reapeth ;
the prophets sowed, and the apostles reaped.