History of Jehovah's Witnesses book, "Three Worlds and the Harvest of This World", was published in early 1877. It articulated ideas that remained the teachings of Russell's associates for the next 40 years, many of which are still embraced by Jehovah's Witnesses: it identified a 2520-year-long era called "the Gentile Times", which would end in 1914, and broke from Adventist teachings by advancing Russell's concept of "restitution" — that all humankind since Adam would be resurrected to the earth and given the opportunity for eternal perfect human life. Russell claimed it was the first book to combine biblical end-time prophecies with the concept of
Jehovah's Witnesses beliefs Satan, will be ended by a direct intervention of Jehovah (God), who will use Jesus Christ to fully establish his heavenly government over earth, destroying existing human governments and non-Witnesses, and creating a cleansed society of true worshippers who can live forever. They see their mission as primarily evangelical (disseminating "good news"), to warn as many people as possible in the remaining time before Armageddon. All members of the denomination are expected to take an active part in preaching. Witnesses refer to all their beliefs collectively as "the Truth". Doctrines of Jehovah's Witnesses are established by their Governing Body, which