'Stiff' in the Bible

and thou hast known, that not for thy righteousness is Jehovah thy God giving to thee this good land to possess it, for a people stiff of neck thou art.

And Jehovah speaketh unto me, saying, I have seen this people, and lo, a people stiff of neck it is;

For I know thy rebellion, and thy stiff neck: behold, while I am yet alive with you this day, ye have been rebellious against the LORD; and how much more after my death?