Pray that the saints would discover in their practice of prayer that at the moment they begin to sing and praise the Lord, He rises to strike and defeat the enemy (2 Chron. 20:20-22).
2 Chron. 20:20-22—And they rose up early in the morning and went out to the wilderness of Tekoa. And as they went out, Jehoshaphat stood up and said, Hear me, O Judah and you inhabitants of Jerusalem. Believe in Jehovah your God, and you will be established; believe in His prophets, and you will succeed. And when he had taken counsel with the people, he appointed them to sing to Jehovah and give thanks in holy array as they went out before the army and say, Give thanks to Jehovah, for His lovingkindness endures forever. And when they began to shout in song and to praise, Jehovah set ambushes for the children of Ammon, Moab, and Mount Seir, who were coming out against Judah; and they were struck.
For further reading please refer to CWWN, vol. 48, “Messages for Building Up New Believers (1),” pp. 250-255.