Catechesis Notes for the Week — Psalm 150: A Call to Praise the Lord—Psalm 150 concludes the psalter with a call to praise the Lord—the eternal God of the promise of salvation. This praise of the Lord is rooted in His saving grace proclaimed in the Gospel of Christ and celebrated by all of creation. The song of praise begins in the church, the mouth-house of the Gospel, and extends throughout creation from the sanctuary to the mighty firmament. Every instrument is called upon to give all glory and honor to God—trumpet, lute, harp, timbrel, dance, stringed instruments, flutes, and cymbals. All the known instruments of the ancient world were employed in the service of the Lord. Finally, the psalm concludes with the simple, yet profound call to all: “Let everything that has breath praise the Lord.” All living things are creatures dependent upon Him! He is both the Creator and Savior! All glory to the Lord! Praise the Lord! It is in the Lord’s praise that we find our peace and contentment, hope and optimism for the future.