I was looking at "Lord, This Day We've Come to Worship" last month and found an-other instance where a phrase is sung to notes of all different pitches, resulting in something of a sense of breadth or entirety. The last line of the hymn (aside from the refrain) is "Serve the Lord through all our days," sung to this musical phrase from the tune "Glorious Name":
The phrase "all our days" is sung to the notes A G F.