After consulting the people, Jehoshaphat appointed men to sing to the Lord and to praise him for the splendor of his holiness as they went out at the head of the army, saying: “Give thanks to the Lord, for his love endures forever.” As they began to sing and praise, the Lord set ambushes against the men of Ammon and Moab and Mount Seir who were invading Judah, and they were defeated. 2 Chronicles 20: 21-22 (NIV) [Emphasis added]
Colossians 3:14-17 (NIV)
And over all these virtues put on love, which binds them all together in perfect unity.
Let the peace of Christ rule in your hearts, since as members of one body you were called to peace. And be thankful.
Let the message of Christ dwell among you richly as you teach and admonish one another with all wisdom through psalms, hymns, and songs from the Spirit, singing to God with gratitude in your hearts. And whatever you do, whether in word or deed, do it all in the name of the Lord Jesus, giving thanks to God the Father through him.
2 Chronicles 20: 18-20 (NIV)
Jehoshaphat bowed down with his face to the ground, and all the people of Judah and Jerusalem fell down in worship before the Lord. Then some Levites from the Kohathites and Korahites stood up and praised the Lord, the God of Israel, with a very loud voice.
Early in the morning they left for the Desert of Tekoa. As they set out, Jehoshaphat stood and said, “Listen to me, Judah and people of Jerusalem! Have faith in the Lord your God and you will be upheld; have faith in his prophets and you will be successful.”
James 5:13 (NIV)
Is anyone among you in trouble? Let them pray. Is anyone happy? Let them sing songs of praise.
Psalm 100 (KJV)
Make a joyful noise unto the Lord, all ye lands.
Serve the Lord with gladness: come before his presence with singing.
Know ye that the Lord he is God: it is he that hath made us, and not we ourselves; we are his people, and the sheep of his pasture.
Enter into his gates with thanksgiving, and into his courts with praise: be thankful unto him, and bless his name.
For the Lord is good; his mercy is everlasting; and his truth endureth to all generations.
Acts 16:25-26 (KJV)
And at midnight Paul and Silas prayed, and sang praises unto God: and the prisoners heard them. And suddenly there was a great earthquake, so that the foundations of the prison were shaken: and immediately all the doors were opened, and every one’s bands were loosed.
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