"Give Thanks" appears to be a modern adaptation or a song set to a historical hymn tune, possibly from William Caldwell's "Union Harmony" (1837), a significant shape-note tunebook from the American frontier. The original "Union Harmony" contained folk hymns and popular tunes of its time. The description suggests the lyrics were anonymized and recast in the 20th century to create a theistically neutral harvest hymn, making it unique for interfaith use. The melody is likely a traditional American folk hymn.