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 and the United Nations by setting up ... the United Nations, ... This international organization stands for world sovereignty by political men. For years men without faith in God's kingdom have endeavored to get all people to worship this international image of human political sovereignty as the best hope for earthly peace and security, in fact, the last hope for humanity. To date 111 nations have given worship to this political image by becoming members of it. However, we, as witnesses of the Sovereign God Jehovah, will continue refusing to engage in such idolatrous worship." Jehovah's Witnesses teach that the United Nations is the