Revelation 13:15-17 (KJV)
15 And he had power to give life unto the image of the beast, that the image of the beast should both speak, and cause that as many as would not worship the image of the beast should be killed.
16 And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads:
17 And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name.
False Prophets Have A Lying Spirit
God sends his servants to speak through Him, although we must be on our toes for many false prophets, like in Mormonism, are out in wolves clothing deceiving millions of people throughout the generations.