"From East to West"

About two weeks ago, KFUO tweeted the first two verses of "From East to West":

"Behold, the world's creator wears
The form and fashion of a slave;
Our very flesh our maker shares,
His fallen creatures all to save."

Hear Christ for you at https://t.co/CNJZkzVCPV! #Christmas pic.twitter.com/4Rf8upvY4G

— KFUO Radio (@KFUOradio) January 3, 2021

(The plain text is the second verse; the verse in the image is the first.)

At first, I noticed only that "From east to west" and "from shore to shore" are both merisms, but then I lookt at the tune and found a few more features.  Both are in the last phrase of the tune "Vom Himmel hoch":

The second verse ends with the line "His fallen creatures all to save."  "All" is sung with a melisma (F E), musically giving something of a sense of entirety.  The fifth verse is a doxology and ends with the line "And Holy Ghost eternally."  Here, "eternally" is sung with a melisma (G F E D C), musically giving a sense of duration.