Far down the ages now. H. Bonar. [The Church Militant.] Published in his Hymns of Faith and Hope, 1st Series, 1857, in 14 stanzas of 4 lines. The centos in common use all begin with stanza i., but differ in the choice of stanzas, and range from five in the Society for Promoting Christian Knowledge Church Hymns, 1871, to eight in the New York Hymns and Songs of Praise, 1874. Although in extensive use in various forms, it is seldom that any two collections have the same arrangement.
--John Julian, Dictionary of Hymnology (1907)