Back in August last year, I noticed a small feature in "Guide Me, O Thou Great Redeemer." The last few lines of the hymn are "Songs of praises, songs of praises / I will ever give to Thee; / I will ever give to Thee." The last "I will ever give to Thee" is sung to this phrase (from the tune "Cwm Rhondda"):
The "ever" is sung with a melisma (B D C A), and because it's stretched out, there's a musical sense of duration.