Augustine of Hippo
Catena Aurea · Johannesevangelium 1
And this is the record of John, when the Jews sent priests and Levites from Jerusalem to ask him, Who art thou? And he confessed, and denied not; but confessed, I am not the Christ. And they asked him, What then? Art thou Elias? And he saith, I am not. Art thou that prophet? And he answered, No. Then said they unto him, Who art thou? that we may give an answer to them that sent us. What sayest thou of thyself? He said, I am the voice of one crying in the wilderness, Make straight the way of the Lord, as said the prophet Esaias.
(in Joan. Tr. iv. c. 4) 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.