Gaudete Sunday: MCITL "his very truth-speaking made him a member of Him Whose title he would not by falsehood take"

From the Holy Gospel according to John
John 1:19-28
In that time were sent from Jerusalem priests and Levites to John, to ask him: Who art thou? And so on.

Homily by Pope St. Gregory (the Great)
7th on the Gospels.
Dearly beloved brethren, the first thing which striketh us in today's Gospel is the lowly-mindedness of John. He was so great that it was thought he might be the Christ; yet he soberly chose rather to seem only what he really was, than to let the belief of men invest him with a dignity which did not belong to him; for he confessed, and denied not, but confessed, I am not the Christ, at the same time he would not deny what he was in reality; and thus his very truth-speaking made him a member of Him Whose title he would not by falsehood take. In that he arrogated not to himself the name of Christ, he became a member of Christ. While he humbly strove to confess his own weakness, he earned by his simplicity a part in the grandeur of his Master.