The Lord is good; His mercy is everlasting, and His truth endureth to all generations. Psalm 100:5
Words: Benjamin Beddome (1717–1795). Published in his posthumous Hymns Adapted to Public Worship (London: Burton & Briggs, 1818), number 14.
Music: Metropolitan John T. Layton, Sr., in The African Methodist Episcopal Hymn and Tune Book (Philadelphia, Pennsylvania: African Methodist Episcopal Book Concern, 1898) (🔊 pdf nwc).
If you know where to get a good photo of Layton (head & shoulders, at least 200×300 pixels),
The truth of God shall still endure
And firm His promise stand;
Believing souls may rest secure
In His almighty hand.
Should earth and hell their forces join,
He would contemn their rage,
And render fruitless their design,
Against His heritage.
The rainbow round about His throne
Proclaims His faithfulness;
He will His purposes perform,
His promises of grace.
Mountains and hills shall melt away,
But He is still the same;
Let saints to Him their homage pay,
And magnify His name.