When God told King Jehoshaphat to go to war against Ammonites, Moabites and Mount Seir through Jahaziel to go down to fight but they do not need to fight but position yourselves, stand still, and see the salvation of the Lord. He appointed some singer and some others to Praise the splendor of His holiness instructed as against carrying spears and armors to war.  

Eventually victory was theirs at the end and they also have plunder at the end.

Read more @ http://overcomers-faith.org/god-only-you-can-trust/