Mark 14:49

I was daily with you in the temple teaching, and ye took me not: but this is done that the scriptures might be fulfilled.

Here is corroboration of the extensive ministry in Jerusalem; and note that this is not at all "a hint" of such a ministry, but a definitive statement that it occurred in dimensions that were fully commensurate with the marvelous deeds and teachings recorded in John.

That the scriptures might be fulfilled ... The evil throng carrying out the arrest of Christ were fulfilling Scripture, but they knew it not. It is of singular importance that many of the prophecies fulfilled during that eventful week were fulfilled by the Lord's enemies. As to what Scriptures are meant here, there were many, among them Zechariah 13:7; and the next verse shows that Jesus had that one in mind.