'Be Strong' in the Bible

But as for you, be strong and do not lose courage, for there is reward for your work.”

Behold, Amariah the chief priest will be over you in all matters of the Lord, and Zebadiah the son of Ishmael, the governor of the house of Judah, in all the king’s matters; and the Levites will serve you as officers. Deal courageously, and may the Lord be with the upright.”

“Be strong and courageous. Do not fear or be dismayed because of the king of Assyria, nor because of all the army that is with him; for the One with us is greater than the one with him.