"Jesus, Priceless Treasure"

Last July I noticed a small thing about "Jesus, Priceless Treasure," sung to the tune "Jesu, meine Freude" ("Jesus, my joy" in German).  The last two lines of the third verse are "Earth and all its depths adore Him / Silent bow before Him," and that second line is sung to this phrase:

There's a descent in the tune, which reflects the descent of the "bow[ing]" in the hymn text.