João 18:20-21

Jesus affirmed that He had always taught openly. He had not promoted sedition secretly. He had no secret teaching to hide. Obviously He was not denying that He had taught His disciples privately. He was assuring Annas that His teachings were not subversive. He did not have two types of teaching, a harmless one for the multitudes and a revolutionary one for his disciples. [Note: Morris, p. 670.] He invited Annas to question His hearers, not just His disciples, to determine if He had indeed taught anything for which someone might accuse Him of being disloyal. The testimony of witnesses was an indispensable part of any serious trial in Judaism.