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
Because I saw that your heart was hard, and that your neck was an iron cord, and your brow brass;
Jeremiah 5:3
O Lord, do not your eyes see good faith? you have given them punishment, but they were not troubled; you have sent destruction on them, but they did not take your teaching to heart: they have made their faces harder than a rock; they would not come back.
Zechariah 7:12
And they made their hearts like the hardest stone, so that they might not give ear to the law and the words which the Lord of armies had said by the earlier prophets: and there came great wrath from the Lord of armies.