"O Lord, We Praise Thee"

"O Lord, We Praise Thee" was one of the hymns in a church service I attended a couple weeks ago, and I noticed a small feature in it.  Near the end of the second verse, there's the line "All our debt Thou hast paid," sung to this musical phrase from the tune "Gott sei gelobet und gebenedeiet":

The phrase "All our debt" is sung to notes of all different pitches (E F G), giving something of a sense of this entirety.