'Stiffened' in the Bible

Yet they did not listen to Me and obey Me or bend their ear [to hear Me], but stiffened their neck; they did more evil and behaved worse than their fathers.

Yet they would not listen and obey and control their behavior; but they were stiff-necked in order not to hear and take instruction.

“Thus says the Lord of hosts, the God of Israel, ‘Behold, I am going to bring on this city and on all its towns, all the devastation that I have declared against it, because they have become stiff-necked and refused to hear and obey My words.’”