Zechariah 7:12 KJV
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.
Zechariah 7:12, King James Version
In context
11 But they refused to hearken, and pulled away the shoulder, and stopped their ears, that they should not hear.
12 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.
13 Therefore it is come to pass, that as he cried, and they would not hear; so they cried, and I would not hear, saith the Lord of hosts: