Command Thy blessing from above. J. Montgomery. [Divine Worship.] Written for the Sheffield Sunday School Union, Whitsuntide gathering, June 3, 1816, and printed for that occasion, and in the Evangelical Magazine, Sept., 1816, p. 372. In 1819 it was included in Cotterill's Selection, No. 13, in 5 stanzas of 4 lines, and there entitled "For God's blessing on His assembled people." In 1825 it was republished, with alterations, by Montgomery, in his Christian Psalmist, No. 470, and again with the same text in his Original Hymns, 1853, No. 99. The arrangement, however, in common use are various, some following Cotterill’s text, as in Hymnal Companion from Bickersteth's Christian Psalmody, 1833, others the revised text of 1825 and 1853, and others, as in New Congregational Hymn Book, a mixture of the two. The American use also varies in like manner.
--John Julian, Dictionary of Hymnology (1907)