Charles Ellicott 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)

Rabbi, he that was with you beyond Jordan.—John’s disciples, with a natural attachment to their master, and without the knowledge of what that master’s work really was, are jealous of what seems to them the rival work of Jesus. He had been with John; the Baptist had borne witness to Him. Now He seems to usurp his work, and the throngs which had crowded to the Forerunner go to Him. (Compare Notes on John 1:8; John 4:2.)

You bore witness.—Better, you have borne witness.