Joseph and Sidney's Preaching Amazes and Trembles the People

John Whitmer documented the powerful preaching of Joseph Smith and Sidney Rigdon after they received revelations in Kirtland. Whitmer wrote: 'Joseph and Sidney went to the several churches preaching and prophesying wherever they went, and greatly strengthened the churches that were built unto the Lord. Joseph prophesied saying: God is about to destroy this generation, and Christ will descend from heaven in power and great glory, with all the holy angels with him, to take vengeance upon the wicked, and they that know not God. Sidney preached the gospel and proved his words from the holy prophets: and so powerful were their words, that the people who heard them speak were amazed, and trembled, and knew not whereunto this thing would grow.' The power of the Spirit working through Joseph and Sidney brought conviction and amazement to all who heard them, demonstrating the authority of the priesthood.