Come, 0 my soul, in sacred lays. [Omnipotence.] In Miller's Singers and Songs, &c, 1869, p. 228, in Duffield, 1886, p. 109, and in others this hymn is attributed to "Thomas Blacklock" (p. 144, ii.), but in no instance is the statement supported by satisfactory evidence. We have failed to trace it in any of Blacklock's works.
--John Julian, Dictionary of Hymnology, Appendix, Part II (1907)