God of the morning, at [Thy] Whose voice. J. Watts. [Morning.] First published in his Hymns & Sacred Songs, 1709, Book i., No. 79, in 6 stanzas of 4 lines, as "A Morning Hymn." It is sometimes used in an abbreviated form, and as "God of the morning, at Thy voice." Its use in its full, or in abridged form, is extensive in Great Britain and America.
--John Julian, Dictionary of Hymnology (1907)