Eternal Beam of Light Divine. C. Wesley. [In Affliction.] Appeared in Hymns & Sacred Poems, 1739, p. 144, in 6 stanzas of 4 lines. (Poetical Works, 1868-72, vol. i. p. 128; and again in the Wesleyan Hymn Book, 1780, No. 328. It has passed into several collections in Great Britain, America, and other English-speaking countries. In the Boston (U.S.) Unitarian Hymn & Tune Book for the Church & Home, 1868, it is altered to "Eternal God, Thou Light Divine"; and in Songs of Christian Praise, N.Y., 1880, and others, as:—"Eternal Source of Light Divine." It is a soothing and inspiriting hymn, and well adapted for use in affliction.
--John Julian, Dictionary of Hymnology (1907)