The chariot! the chariot! its wheels roll on fire. H. H. Milman. [Advent.] First published in Bishop Heber's posthumous Hymns, &c, 1827, p. 7, in 5 stanzas of 4 lines, but not included by the author in his Selection of Psalms & Hymns, 1837. It is in several modern hymn-books, including Kennedy, 1863; Snepp's Songs of Grace & Glory, 1872, &c.
-- John Julian, Dictionary of Hymnology (1907)