18. οἱ Ἰουδαῖοι. See on Joh 1:19. On ἀπεκρίθησαν see on Joh 10:32.
Τί σημεῖον. We have a similar question Mat 21:23, but the widely different answer shews that the occasion is different. Such demands, thoroughly characteristic of the Pharisaic spirit (1Co 1:22), would be often made. The Jews failed to see that Christ’s words and works were their own credentials. For ὅτι see Winer, p. 557.