To God the only wise, Who keeps us by His word. [Doxology.] This doxology, which is in somewhat extensive use in America, is usually ascribed to I. Watts. One stanza only —the second, "Hosannah to the Word"—is from his works, and this is altered from his C. M. doxology in Hymns and Sacred Songs, 1707. Stanzas i. and iii. we have not traced. The latter is 2 Cor. xiii. 14 turned into metre.
--John Julian, Dictionary of Hymnology (1907)