First, you build up fellow believers when you sing:
- Ephesians 5:19: Note specifically here that it says: “addressing one another in psalms and hymns and spiritual songs…”
- We see the same thing in Colossians 3:13-16: the exhortation to sing comes on the heels of bearing with one another (13a), forgiving one another (13b), putting on love (14), being at peace as one united body of Christ (15), and teaching God’s Word to one another (16).
When we do what the Bible says and sing together as a church family, we are hearing confessions of faith all around! We are hearing hundreds join with us and sing, “In Christ alone, MY hope is found!” We are hearing hundreds of testimonies of faith all around us!
Also know that as you sing, you’re helping unbelievers. In Psalm 105:1-2, the Lord is calling the Israelites to be a light unto the nations, and to do this He tells them: “Sing to Him, sing praises to Him; tell of all his wondrous works!”
Think of the impact on someone who doesn’t know Christ to hear those hundreds of testimonies, those hundreds of confessions of faith as we sing together! This is why Pastor Tim Keller says: “Good corporate worship will naturally be evangelistic” (219).