Forever I will sing of your great love, O LORD,
to every changing age your faithfulness record.
I will declare how firm your steadfast love is founded,
established in the skies with faithfulness unbounded.
You promised David that his throne would last forever.
Your covenant with him no power on earth can sever.
One of the best-known tunes from the Genevan Psalter, GENEVAN 89 was first published in the 1562 edition. Jacobus J.K. Kloppers (PHH 87) harmonized the tune for the Psalter Hymnal in 1985. The first line is repeated in the second, and all the lines have a similar rhythmic pattern, including the last line, which was changed from the original (the third and fourth notes were originally half notes). Much of the psalm should be sung jubilantly, but sing stanzas 6 and 7 in a subdued manner. Antiphony can be useful in singing the complete psalm.
--Psalter Hymnal Handbook, 1988