Some reasons we sing in corporate worship
(This slightly edited post was first published May 15, 2014, and was an excerpt from a 2012 post.)
Christianity is a singing faith, and for that -- I think -- we should all be thankful. The Bible -- which governs how we worship -- calls in both the Old and New Testaments for singing by God's people corporately.
While more could be listed, here are some reasons Scripture indicates we should sing as a church:
(1) We should sing to give God glory.
"Sing the glory of His name; make His praise glorious" (Ps. 66:2). These commands from the psalmist are to all the earth, so it certainly applies to those who belong to God as His redeemed children. We give him glory in song by declaring how glorious He is and by making our praise of Him glorious.
(2) We should sing to declare God's attributes.
The same verse, Ps. 66:2, conveys this message by speaking of "the glory of His name." God's "name" in Scripture refers to who He is -- in other words, what His nature is, what His attributes are. The psalmist says God's people should make His attributes known in their singing.
(3) We should sing to proclaim the atoning death of Christ.
"And they sang a new song, saying, 'Worthy are You to take the book and to break its seals; for You were slain, and purchased for God with Your blood men from every tribe and tongue and people and nation. You have made them to be a kingdom and priests to our God; and they will reign upon the earth'" (Rev. 5:9-10) The apostle John's vision showed those around the throne singing about the blood sacrifice of the Lamb of God and its far-reaching impact. We will sing as one great choir about the cross-work of Jesus one day in Heaven, and we can do it now corporately on earth as the church.
(4) We should sing to instruct and encourage one another.
"Let the word of Christ richly dwell within you, with all wisdom teaching and admonishing one another with psalms and hymns and spiritual songs, singing with thankfulness in your hearts to God" (Col. 3:17). Singing, as the apostle Paul explains, has a discipleship function during corporate worship. As we sing, we act as teachers and encouragers to those with whom we are worshiping. We should recognize our singing is for the building up of our fellow saints, and their singing is for our building up.
(5) We should sing to express our heartfelt affection to God.
In this same verse from Col. 3, Paul says Christians in worship should sing "with thankfulness in your hearts to God." In Eph. 5:19, he says believers are to be "singing and making melody with your heart to the Lord." Singing is a means of expressing ourselves to God. As we sing together corporately, we tell Him of our gratitude for what He has accomplished on our behalf and express to Him joyful affection for who He is and what He has done.