Job 41:24
Its heart is as hard as stone, as hard as the lower millstone.
Isaiah 48:4
I knew that you would prove to be stubborn. You were as rigid as iron and unyielding as copper.
Jeremiah 5:3
Jehovah looks for faithfulness. He struck you, but you paid no attention. He crushed you, but you refused to learn. You were stubborn and would not turn from your sins.
Zechariah 7:12
They made their hearts hard like flint and would not listen to the law, and the words that Jehovah of Hosts sent by his Spirit through the former prophets. Great anger came from Jehovah of Hosts!
Treasury of Scripture Knowledge
Summary
His heart is as firm as a stone; yea, as hard as a piece of the nether millstone.
As hard
Bible References
As hard
Isaiah 48:4
I knew that you would prove to be stubborn. You were as rigid as iron and unyielding as copper.
Jeremiah 5:3
Jehovah looks for faithfulness. He struck you, but you paid no attention. He crushed you, but you refused to learn. You were stubborn and would not turn from your sins.
Zechariah 7:12
They made their hearts hard like flint and would not listen to the law, and the words that Jehovah of Hosts sent by his Spirit through the former prophets. Great anger came from Jehovah of Hosts!