'Hardening' in the Bible

And looking round upon them with anger, distressed at the hardening of their heart, he says to the man, Stretch out thy hand. And he stretched it out, and his hand was restored.

So that you will not be conceited, brothers, I do not want you to be unaware of this mystery: A partial hardening has come to Israel until the full number of the Gentiles has come in.

being darkened in their understanding, alienated from the life of God, because of the ignorance that is in them, because of the hardening of their heart;