Because I found so many little things, I'm going to go through the hymn in sections of two phrases each. The tune is "Ellacombe."
The first two phrases:
In the fourth verse, the text here is "That light our hope sustaining / We walk the pilgrim way." "Walk" is sung with a melisma (E F#), musically giving a sense of movement. As a whole, the second phrase here is completely conjunct (it doesn't skip any notes in the scale), which gives a sense of walking step by step.
The second two phrases:
In the second verse, the text is "This day for our salvation / Christ rose from depths of earth." The "rose" is sung with an ascending melisma (E F#), musically giving a sense of the word's meaning.
In the fourth verse, the text is "At length our rest attaining, / Our endless Sabbath day." Here, "endless" is sung with a melisma (E F# G), for a musical sense of duration.
The third two phrases:
The fourth two phrases:
In the first verse, the text is "Sing, 'Holy, holy, holy,' / The triune God confess," and in the second verse, the text is "And thus this day more glorious / A threefold light was giv'n." "Triune" and "threefold" are both sung to three notes (E F# G), so there's a musical picture of that number.
In the fourth verse, the text is "The Church her voice upraises / To Thee, blest Three in One." "Upraises" is sung to a (generally) ascending group of notes (G B C D), musically giving a sense of that "uprais[ing]."