Why Should We Sing all 150 Psalms?

Should the church still sing the Psalms today? Are they not songs of the old covenant? God's church is called to sing all the Psalms. In singing the Psalms, we learn about the life God calls us to, the beauty of Christ, and the justice of God. Singing the Psalms will also enrich God's church to think about some topics which may be difficult. In singing Psalms, we sing God's word back to Him.