'Be Strong' in the Bible

But as for you, be strong and let not your hands be weak, for there is reward for your labor."

And behold, Amariah the chief priest [is] over you in all matters of the word of Yahweh, and Zebadiah the son of Ishmael, the governor of the house of Judah, in all matters of the king, and the Levites [shall be] before you [as] officials. Be strong and do [well]! May Yahweh be with the upright."

But even still, you yourself go, do! Be strong for the battle [else] God will make you stumble before the enemy! For there is power with God to help and to cause stumbling."

Then he said to the people, to the inhabitants of Jerusalem, to give a gift for the priests and the Levites, so that they might be strong in the law of Yahweh.

"Be strong! Be courageous! Do not fear and do not be dismayed before the king of Assyria and before all the crowd that [is] with him, for [there are] more with us than with him.