John 8:26

I have many things to speak and to judge concerning you: howbeit he that sent me is true; and the things which I heard from him, these speak I unto the world.

Concerning you ... They had demanded a more definite statement from Christ of his identity; but he responded with a promise to tell the whole world who they were! This was spoken sadly in view of the deepening of the chasm between himself and the leaders of the chosen people. As Westcott noted:

In them unbelief was embodied. So the sentence follows: "I have many things to speak and to judge concerning you." The uttering of these judgments will widen the chasm between us, but they must be spoken at all cost; (for) he that sent me is true. In his message there is no superfluity and no defect, and the things I heard from him, when I came on earth to do his will, these speak I unto the world.[4]

Some of the judgments Jesus would speak against those men followed at once, as when he identified them as sons of the devil (John 8:44). Other such denunciations were in the three parables of: (1) the two sons, (2) the wicked husbandmen, and (3) the marriage of the king's son. In the latter, he prophesied the destruction of Jerusalem.