Behold, I have told you before.
] Meaning not before in this discourse, though he had in ( Matthew 24:5 Matthew 24:11 ) signified also, that false Christs, and false prophets should arise, but before these things came to pass; so that they had sufficient notice and warning of them, and would be inexcusable if they were not upon their guard against them; and which, when they came to pass, would furnish out a considerable argument in proof of him, as the true Messiah, against all these false ones, showing him to be omniscient; and so would serve to establish their faith in him, and be a means of securing them from such deceivers.