John 1:19
19This is John’s testimony, when the Jews sent priests and Levites from Jerusalem to ask him, “Who are you?”
Jerusalem sends priests and Levites with a question: Who are you? The inquiry is official, not casual. Arminians find a moment of decision. A true answer can be received or refused.
John’s testimony is public because God wants the identity of the Christ known. Questions from the center of Israel’s worship are not a nuisance; they are an opening for witness that hearers may believe.
This is the testimony of John. Calvin: the Evangelist now records a more illustrious witness, given to the ambassadors of the priests so that it might reach Jerusalem. God orders even this embassy.
“Who are you?” is providence as well as politics. The Sender of the Baptist also governs the questions put to him. The church will live by this open confession, not by rumor.