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

“(Hom. xvii. [al. xvi.] 1. in Joan) John having preached the thing concerning Christ publicly and with becoming liberty, the Evangelist mentions the place of His preaching: These things were done in Bethany beyond Jordan, where John was baptizing. For it was in no house or corner that John preached Christ, but beyond Jordan, in the midst of a multitude, and in the presence of all whom He had baptized. Some copies read more correctly Bethabara: for Bethany was not beyond Jordan, or in the desert, but near Jerusalem.”