In the first verse, the text here is "Christ, mighty Savior, Light of all creation." "Creation" is sung with a melisma (E E C D), musically giving a sense of the entirety of "all."
Here's the third musical phrase:
In the third verse, the text here is "With all creation joining hearts and voices." Again, "creation" is sung with a melisma (F# G F# E), giving a sense of that "all."
