'Sing' in the Bible

When he had consulted with the people, he appointed those who sang to the Lord and those who praised Him in their holy (priestly) attire, as they went out before the army and said, “Praise and give thanks to the Lord, for His mercy and lovingkindness endure forever.”

When they began singing and praising, the Lord set ambushes against the sons of Ammon, Moab, and Mount Seir, who had come against Judah; so they were struck down [in defeat].

Also King Hezekiah and the officials ordered the Levites to exclaim praises to the Lord with the words of David and of Asaph the seer. And they exclaimed praises with joy, and bowed down and worshiped.