Both are within the first two phrases (the tune is "Mississippi"):
In the first verse, the text here is "Sing with all the saints in glory, / Sing the resurrection song!" "Resurrection" is sung to an ascending group of notes (F G A Bb), musically giving a sense of its meaning.
In the third verse, the text is "Life eternal! Heav'n rejoices: / Jesus lives who one was dead." Here, "eternal" is sung with a melisma (F C F E), and since the word is drawn out, there's a sense of that duration.
