King James Version
Yea, they made their hearts as an adamant stone, lest they should hear the law, and the words which the LORD of hosts hath sent in his spirit by the former prophets: therefore came a great wrath from the LORD of hosts.English Standard Version
They made their hearts diamond-hard lest they should hear the law and the words that the LORD of hosts had sent by his Spirit through the former prophets. Therefore great anger came from the LORD of hosts.New International Version
They made their hearts as hard as flint and would not listen to the law or to the words that the LORD Almighty had sent by his Spirit through the earlier prophets. So the LORD Almighty was very angry.