'Good Courage' in the Bible

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

Haven't I commanded you? Be strong and of good courage. Do not be afraid, neither be dismayed: for the LORD your God is with you wherever you go.

Whoever rebels against your commandment, and doesn't listen to your words in all that you command him, he shall be put to death. Only be strong and of good courage."

Joshua said to them, "Do not be afraid, nor be dismayed. Be strong and of good courage, for the LORD will do this to all your enemies against whom you fight."