John Chrysostom — as excerpted in the Catena Aurea on John 1:24-28

“(Hom. xvi. [al. xv.] 2) Or, those very same priests and Levites were of the Pharisees, and, because they could not undermine him by blandishments, began accusing, after they had compelled him to say what he was not. And they asked him, saying, Why baptizest thou then, if thou art not the Christ, neither Elias, neither that Prophet? As if it were an act of audacity in him to baptize, when he was neither the Christ, nor His precursor, nor His proclaimer, i. e. that Prophet.”