'Stony' in the Bible

Their [wicked, godless] judges are thrown down the sides of the rocky cliff,And they [who followed them] will hear my words, for they are pleasant (just).

And I will give them one heart [a new heart], and put a new spirit within them. I will take from them the heart of stone, and will give them a heart of flesh [that is responsive to My touch],

Moreover, I will give you a new heart and put a new spirit within you, and I will remove the heart of stone from your flesh and give you a heart of flesh.