Revelation given to Joseph Smith the Prophet, at Nauvoo, Illinois, 19 January 1841 (see History of the Church, 4:274–86). Because of increasing persecutions and illegal procedures against them by public officers, the Saints had been compelled to leave Missouri. The exterminating order issued by Lilburn W. Boggs, governor of Missouri, dated 27 October 1838, had left them no alternative (see History of the Church, 3:175). In 1841, when this revelation was given, the city of Nauvoo, occupying the site of the former village of Commerce, Illinois, had been built up by the Saints, and here the headquarters of the Church had been established.