'Be Strong' in the Bible

Can your heart endure, or can your hands be strong, in the days that I shall deal with you? I, the LORD, have spoken it, and will do it.

"Son of man, I have broken the arm of Pharaoh king of Egypt; and behold, it has not been bound up, to apply healing medicines, to put a bandage to bind it, that it be strong to hold the sword.