In the third verse, the text here is "All praise to Thee, who safe hast kept" (the sense is continued into the second line: "And hast refreshed me while I slept"). "All" is sung with a melisma (G A), giving something of a sense of entirety.
The third musical phrase:
In the first verse, the text here is "Shake off dull sloth and joyful rise." "Shake" is sung with a melisma (D E), giving a sense of its meaning, and the phrase generally ascends, illustrating that "ris[ing]."
The fourth musical phrase:
In the third verse, the text here is "[Grant that] I may of endless light partake." "Endless" is sung with a melisma (G B D C), and since it's stretched out, there's a sense of duration.
