I was looking at "Light of Light, O Sole-Begotten" a couple months ago and found an-other small feature to note. The second line of the second verse is "God created all we see," sung to this phrase from the tune "Westminster Abbey":
The phrase "all we see" is sung to notes of all different pitches (F# E D), lending something of a sense of this breadth or entirety, although the span is only a major third.