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 "Jehovah" with the same prevalence, they believe that only Jehovah's Witnesses are making God's name known. Jehovah's Witnesses believe that Jesus is God's "only-begotten Son", and that his life began in heaven. He is described as God's first creation and the "exact representation of God", but is believed to be a separate entity and not part of a Trinity. Jesus is said to have been used by God in the creation of all other things. Jehovah's Witnesses believe that the Archangel, Michael, "the Word" of John 1:1, and wisdom personified in Proverbs 8 refer to Jesus in his pre-human existence