Charles Spurgeon Commentary John 3:26

"And they came unto John, and said to him, Rabbi, he that was with thee beyond the Jordan, to whom thou hast borne witness, behold, the same baptizeth, and all men come to him." — John 3:26 (ASV)

And they came to John, and said to him, Rabbi, he that was with you beyond Jordan, to whom you bore witness, behold, the same baptizes, and all men come to him.

"They are leaving you." They felt an envy on behalf of John, because his influence appeared to be declining. John was quite a stranger to this feeling; he loved to see his Master grow, even at the cost of his own effacing.