'Callous' in the Bible

"He has blinded their eyes and made their minds callous, lest they should see with their eyes and perceive with their minds, and should turn, and I should heal them."

For this people's mind has grown callous, their hearing has become dull, and their eyes they have closed; to prevent their ever seeing with their eyes, or hearing with their ears, or understanding with their minds, and turning back, so that I might cure them.'