Let not your hearts with anxious thoughts. William Robertson. [Ascension.] First appeared as No. 14 in the Draft Scottish Translations and Paraphrases, 1745, as a version of John xiv. 1-5, in 6 stanzas of 4 lines. In the Draft of 1781, No. 42, stanza iii. was omitted; st. iv, rewritten; and stanza i. slightly altered.
Thence, unaltered, in the public-worship edition issued in that year by the Church of Scotland and still in use. In the markings by the eldest daughter of W. Cameron the original is ascribed to Robertson, and the alterations in the 1781 text to Cameron. The revised text of 1781 is included in the English Presbyterian Psalms & Hymns, 1867, and a few other collections. In Porter's Selection, Glasgow, 1853, it is altered to "Let not your hearts—His Jesus speaks," and in the Twickenham Chapel Collection, 1845, p. 60, to "Let not your hearts be troubled now." [Rev. James Mearns, M.A.]
--John Julian, Dictionary of Hymnology (1907)