Behold the throne of grace. J. Newton. [The Throne of Grace.] Appeared in the Olney Hymns, 1779, Book i.. No. 33, in 8 stanzas of 4 lines, and based on 1 Kings iii. 5. Although extensively used both in Great Britain and in America, it is generally in an abridged, and sometimes altered form. In 1781 J. Wesley published the last four stanzas of the original as a hymn in the Arminian Magazine, p. 285, beginning "Since 'tis the Lord's command," but it failed to attract attention, and in that form is unknown to modern hymn-books.
-- John Julian, Dictionary of Hymnology (1907)