In the second verse, the text here is "Oh, that birth forever blessed." "Blessed" is sung with a melisma (G F Eb), giving a sense of the duration of the modifying "forever."
The second musical phrase:
The second verse continues with the line "When the virgin, full of grace." Here, "full" is sung with a melisma (Bb G), lending a sense of abundance.
The fourth musical phrase:
In the fifth verse, part of the doxology here is "And unending praises be." Similar to "blessed" above, "praises" is sung with a melisma (Eb C D), giving a sense of this extended duration.
The fifth musical phrase:
In the third verse, the text here is "Now He shines, the long-expected." "Long-expected" is sung with a melisma (G F Bb C Bb G Ab Bb), once again providing a sense of duration.
The sixth musical phrase:
In the fourth verse, the text here is "Ev'ry voice in concert ring." The phrase "ev'ry voice" is sung to notes of all different pitches (Eb D C), indicating this breadth.
The seventh musical phrase:
Every verse ends with the line "Evermore and evermore," and once again, a melisma provides a sense of duration: the second "evermore" is sung to the notes G Eb F Eb.
[Years ago, I wrote about a small feature in the third phrase.]
