Its heart is hard as rock, hard as a lower millstone.

"""I'm going to give you a new heart, and I'm going to give you a new spirit within all of your deepest parts. I'll remove that rock-hard heart of yours and replace it with one that's sensitive to me.

He put him on the high places of the earth, his food was the increase of the field; honey he gave him out of the rock and oil out of the hard rock;

who turned a rock into a pool of water, a hard rock into springs of water!

And they turned and fled toward the wilderness unto the rock of Rimmon: and they gleaned of them in the highways five thousand men; and pursued hard after them unto Gidom, and slew two thousand men of them.

He puts his hand on the hard rock; he overturns mountains by [the] roots.

Who was your guide through that great and cruel waste, where there were poison-snakes and scorpions and a dry land without water; who made water come out of the hard rock for you;