There is an eye that never sleeps, p. 1197, i.; Wallace, J. C. At this place this hymn is given to James Cowden Wallace in error. It is by John Aikman Wallace, p. 1594, ii., and appeared in the Scottish Christian Herald, Sep. 28, 1839, p. 616. W. F. Stevenson, in his note thereon in his Hymns for the Church and Home, 1872, says that the original was furnished to him in manuscript by Mr. Wallace's family, that the lines were not divided into stanzas, and that the received version of the text is an amended form required by the metre, and made by an unknown hand. Stevenson gives also specimen lines from the MS.
--John Julian, Dictionary of Hymnology, New Supplement (1907)