NET
19 Now this was John’s testimony when the Jewish leaders sent priests and Levites from Jerusalem to ask him, “Who are you?”
Darby
19 And this is the witness of John, when the Jews sent from Jerusalem priests and Levites that they might ask him, Thou, who art thou?
KJV
19 And this is the record of John, when the Jews sent priests and Levites from Jerusalem to ask him, Who art thou?