Origen
Catena Aurea · Johannesevangelium 1
There was a man sent from God, whose name was John. The same came for a witness, to bear witness of the Light, that all men through him might believe. He was not that Light, but was sent to bear witness of that Light.
(t. ii. c. 28) Some try to undo the testimonies of the Prophets to Christ, by saying that the Son of God had no need of such witnesses; the wholesome words which He uttered and His miraculous acts being sufficient to produce belief; just as Moses deserved belief for his speech and goodness, and wanted no previous witnesses. To this we may reply, that, where there are a number of reasons to make people believe, persons are often impressed by one kind of proof, and not by another, and God, Who for the sake of all men became man, can give them many reasons for belief in Him. And with respect to the doctrine of the Incarnation, certain it is that some have been forced by the Prophetical writings into an admiration of Christ by the fact of so many prophets having, before His advent, fixed the place of His nativity; and by other proofs of the same kind. It is to be remembered too, that, though the display of miraculous powers might stimulate the faith of those who lived in the same age with Christ, they might, in the lapse of time, fail to do so; as some of them might even get to be regarded as fabulous. Prophecy and miracles together are more convincing than simply past miracles by themselves. We must recollect too that men receive honour themselves from the witness which they bear to God. He deprives the Prophetical choir of immeasurable honour, whoever denies that it was their office to bear witness to Christ. John when he comes to bear witness to the light, follows in the train of those who went before him.