Sing psalms to the Lord who dwells in Zion, and proclaim His deeds among the peoples.
The help and salvation of God, personally known, must be turned into public praise and testimony. David calls people to sing to the Lord and to recount His works among the nations. Zion was the notable place of God’s presence and kingdom. The phrase “who dwells in Zion” does not confine God to one place, but emphasizes His special presence among His people. Praise must not be enclosed only within the inner circle of believers; God’s works must be told to the nations. This verse also contains a call to testimony and mission. Whoever has come to know the Lord’s righteousness and salvation is called to bear witness to it, focusing attention not on personal merits, but on God’s works. Song and proclamation together show that worship and testimony are inseparable. The Church praises the Lord and at the same time proclaims to the world His saving works.