'Hard' in the Bible

And the house of Israel, they are not willing to listen to you, for they [are] not willing to listen to me, for all of the house of Israel is hard of forehead, and they [are] hard of heart.

[But] look, I have made your face hard {against} their faces and your forehead hard {against} their forehead.

"Son of man, Nebuchadnezzar the king of Babylon, he made his army labor hard against Tyre. Every head was rubbed bare, and every shoulder [was] rubbed raw, but a wage was not [paid] for him and for his army from Tyre for the labor that he did against it."