John Chrysostom — as excerpted in the Catena Aurea on John 10:39-42

“(Hom. lxi. 3) Mark their reasoning, John did no miracle, but this Man did; wherefore He is the superior. But lest the absence of miracles should lessen the weight of John’s testimony, they add, But all things that John spake of this Man were true. Though he did no miracle, yet every thing he said of Christ was true, whence they conclude, if John was to be believed, much more this Man, who has the evidence of miracles. Thus it follows, And many believed on Him.”