"O Light Whose Splendor"

I wrote an extensive post about "O Light Whose Splendor" a number of years ago, but when it was a hymn in church a couple months ago, I found an-other small feature to note.  Here's the second musical phrase (from the tune "St. Clement"):

In the first verse, the text here is "With radiance brighter than the sun."  "Brighter" is sung with a melisma (F G A), and the extra syllable illustrates the comparative nature of this adjective.  It's as if there are more notes to mirror the greater degree of brightness.