'Courageously' in the Bible

Edom will be a captive; Seir, its enemies, will be a captive, and Israel [will be] acting {courageously}.

Then Saul said to David, “Behold I will give you my older daughter Merab as a wife; only be brave for me and fight the Lord’s battles.” For Saul thought, “My hand shall not be against him, but let the hand of the Philistines be against him.”

Be strong and let us show ourselves courageous for the sake of our people and for the cities of our God; and may the Lord do what is good in His sight.”

And, behold, Amariah the chief priest is over you in all matters of the LORD; and Zebadiah the son of Ishmael, the ruler of the house of Judah, for all the king's matters: also the Levites shall be officers before you. Deal courageously, and the LORD shall be with the good.