'Good Courage' in the Bible

Be strong and of good courage, for thou shall cause this people to inherit the land which I swore to their fathers to give them.

Have I not commanded thee? Be strong and of good courage. Be not frightened, neither be thou dismayed, for LORD thy God is with thee wherever thou go.

Whoever he is who shall rebel against thy commandment, and shall not hearken to thy words in all that thou command him, he shall be put to death. Only be strong and of good courage.

And Joshua said to them, Fear not, nor be dismayed. Be strong and of good courage, for thus shall LORD do to all your enemies against whom ye fight.