Jeremiah's first appearance in public was during the reign of Josiah, when he announced to the people in the streets: "If ye will give up your wicked doings, God will raise you above all nations; if not, He will deliver His house into the hands of the enemies, and they will deal with it as seemeth best to them."

The prophets contemporary with Jeremiah in his early years were Zechariah and Huldah. The province of the latter was among women, while Zechariah was active in the synagogue. Later, under Jehoiakim, Jeremiah was supported by the prophets of his relative Uriah of Kiriathjearim, a friend of the prophet Isaiah. But Uriah was put to death by the ungodly king, the same who had the first chapter of Lamentations burnt after obliterating the Name of God wherever it occurs in the whole book. But Jeremiah added four chapters.