'Former Prophets' in the Bible

Do not be like your fathers, to whom the former prophets proclaimed, ‘Thus says the Lord of hosts, “Repent [that is, change your way of thinking] and return now from your evil way [of life] and from your evil deeds.”’ But they did not listen or pay attention to Me,” declares the Lord.

Should you not hear the words which the Lord proclaimed by the former prophets, when Jerusalem was inhabited and prosperous along with her cities around her, and the South (the Negev) and the foothills were inhabited?’”

They made their hearts [hard] like flint, so that they could not hear the law and the words which the Lord of hosts had sent by His Spirit through the former prophets. Therefore great wrath came from the Lord of hosts.