John 5:34

Testimony from man. When Jesus declared that there was another who bore witness of Him (v. 32), undoubtedly many of the Jews immediately thought that He referred to John the Baptist (see ch. 1:7, 8, 15-18, 26, 27, 29-36). Jesus went on to point out that John indeed had borne witness to the truth, but that the validity of His own claims did not stand or fall by such human testimony.

That ye might be saved. Although recognizing that the truth of His words did not depend upon John’s having testified to them, nevertheless Jesus reminded the Jews that John had witnessed to Him, for large numbers of the people believed John (see Matt. 21:26). By appealing to such testimony, Jesus could encourage some to believe in Him, and thus He could save them.