In the fourth verse, the text here is "Alleluia! King eternal." "Eternal" is sung with a melisma (A G F G), musically giving a sense of duration.
The first verse ends with the lines "'Jesus out of ev'ry nation / Has redeemed us by His blood.'" The first of these two lines is sung to this musical phrase:
The phrase "ev'ry nation" is sung with melismas (A F A | G A Bb A G), and this illustrates that breadth.
