19And the Levites from the Kohathites and Korahites stood up to praise the LORD, the God of Israel, shouting in a very loud voice.
20Early in the morning they got up and left for the Wilderness of Tekoa. As they set out, Jehoshaphat stood up and said, “Hear me, O people of Judah and Jerusalem. Believe in the LORD your God, and you will be upheld; believe in His prophets, and you will succeed.”
21Then Jehoshaphat consulted with the people and appointed those who would sing to the LORD and praise the splendor of His holiness. As they went out before the army, they were singing:
“Give thanks to the LORD,
for His loving devotion endures forever.”
— 2 Chronicles 20:19-21

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Article by Tim Archer

When singers led the army into battle It had to be hard to sing praises while marching against a more powerful enemy. It had to be hard to trust that God would fight the battle. It's easier to depend on ourselves, to trust in our strength, to put our faith in what we see and know. But fait