From All That Dwell below the Skies is Isaac Watt's paraphrase of Psalm 117.
O praise the Lord, all ye nations: praise him, all ye people. For his merciful kindness is great toward us: and the truth of the Lord endureth for ever. Praise ye the Lord.
The Psalms were originally written to be sung. Many of them include musical notations. While the music has long since been lost, the words, as all of the Lord's words, have endured.