Jeremiah 28:8-9

Time would tell, he said, whether Hananiah’s prophecies of peace, or Jeremiah’s prophecies of war, were truly from Yahweh. One of the tests of a true prophet in Israel was the fulfillment of his predictions (cf. Jeremiah 23:16-40; Deuteronomy 18:21-22).

"Jeremiah’s meaning was that the usual message of the earlier prophets was one of doom, and that when he spoke of judgment he was more in the line of the predecessors than Hananiah, who spoke only of peace and prosperity (Deuteronomy 18:20-22)." [Note: Thompson, p. 540.]