In the first verse, the text here is "Lifting up Your people's head." There's an ascent of a third between "Lifting" (sung to two Bb notes) and "up" (sung to a D), musically illustrating the meaning.
In the third verse, the text is "Shall forevermore remain." "Forevermore" is sung with a melisma (Bb D C Bb A), and since it's drawn out, there's a sense of that duration.
Here's the second-to-last musical phrase:
In the third verse, the text here is "Cleansing souls from ev'ry stain." "Ev'ry" is sung with a melisma (C Bb A G), giving a sense of that entirety.