The hymn is sung to the tune "Sixth Night." Here's the first phrase:
The first line is "Now greet the swiftly changing year." "Changing" is sung with a melisma (G F# G), giving something of a sense of its meaning.
In the fourth verse, the text is "His love abundant far exceeds." Here, "far" is sung with a melisma (G F#), giving a sense of degree.
The first musical phrase is repeated as the second musical phrase, and the fourth verse continues with the line "The volume of a whole year's needs." Here, "whole" is sung with the same melisma, providing a sense of that entirety.
In the fifth verse, the second line is "In want and in prosperity." "Prosperity" is sung with a melisma (A G F# G E), providing a sense of that abundance. Incidentally, "In want and in prosperity" is a merism.