Here's the first musical phrase:
As I noted before, in the first line of the hymn, the phrase "lift up" is sung to an ascending interval (albeit only a minor third: G to Bb), giving a sense of its meaning.
In the second verse, the text here is "A righteous Helper comes to thee." "Comes" is sung with a melisma (Eb F), giving something of a sense of movement.
The third musical phrase:
In the first verse, the text here is "The King of kings is drawing near." Similar to the above, since "drawing" is sung with a melisma (Bb C A), there's a sense of movement.
The fifth musical phrase:
In the first verse, the text here is "Life and salvation He doth bring." The words "Life and salvation" are sung to two overlapping cross inscriptions, illustrating that it's through His crucifixion and resurrection that Jesus brings us "life and salvation."
In the third verse, the text is "The cloudless sun of joy is He," and "joy" is sung with a melisma (C Bb), giving a sense of ebullience. In the fourth verse, the text is "So shall your Sov'reign enter in." Like "comes" and "drawing" above, since "enter" is sung with a melisma (C Bb Ab), there's a sense of movement.
The same musical phrase is repeated as the sixth phrase, and in the first verse, the text here is "Therefore rejoice and gladly sing," and in the second, the text is "Therefore the earth is glad and sings." "Gladly" and "glad" are both sung with melismas (C Bb Ab and C Bb, respectively), giving a sense of ebullience.