For they knew that Elias was to preach Christ; the name of Christ not being unknown to any among the Jews; but they did not think that He our Lord was the Christ: and yet did not altogether imagine that there was no Christ about to come. In this way, while looking forward to the future, they mistook at the present.
And he said, I am not.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: in Joan. Tr. iv. c. 4