Near the end of the second verse, there's a line that describes God as "Almighty as before," sung to this musical phrase:
The "al-" of "almighty" is sung with a merism (G A), giving a sense of this entirety.
The last two lines of the third verse (and of the whole hymn) are "That whole and sick and weak and strong / May praise You evermore." That last line is sung to this phrase:
"Evermore" is sung with a melisma (A G E E), and since it's drawn out, there's a sense of that duration.
