If we abide by the principles taught in the Bible, our country will go on prospering and to prosper; but if we and our posterity neglect its instructions and authority, no man can tell how sudden a catastrophe may overwhelm us and bury all our glory in profound obscurity.
Source, in full
First reported in the Annual Report of the Massachusetts Bible Society (1870), p. 27. This is actually a misquote combining phrases from different lines in an address delivered by Webster to the New York Historical Society on February 23, 1852.