'Former Prophets' in the Bible

Be ye not as your fathers, to whom the former prophets cried, saying, Thus says LORD of hosts: Return ye now from your evil ways, and from your evil doings, but they did not hear, nor hearken to me, says LORD.

[Should ye] not [hear] the words which LORD cried by the former prophets, when Jerusalem was inhabited and in prosperity, and the cities thereof round about her, and the South and the lowland were inhabited?

Yea, they made their hearts as an adamant stone, lest they should hear the law, and the words which LORD of hosts had sent by his Spirit by the former prophets. Therefore great wrath came from LORD of hosts.