John Chrysostom
Catena Aurea · Johannesevangelium 1
And they which were sent were of the Pharisees. And they asked him, and said unto him, Why baptizest thou then, if thou he not that Christ, nor Elias, neither that prophet? John answered them, saying, I baptize with water: but there standeth one among you, whom ye know not; He it is, who coming after me is preferred before me, whose shoe’s latchet I am not worthy to unloose. These things were done in Bethabara beyond Jordan, where John was baptizing.
(Hom. xvi. [al. xv.] 3) But lest thou shouldest think this to be the result of comparison, he immediately shews it to be a superiority beyond all comparison; Whose shoe’s latchet I am not worthy to unloose: as if He said, He is so much before me, that I am unworthy to be numbered among the lowest of His attendants: the unloosing of the sandal being the very lowest kind of service.