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 for several centuries. Christian hymns feature the name. The form "Jehovah" also appears in reference books and novels, for example, appearing several times in the novel "The Greatest Story Ever Told" by Roman Catholic author Fulton Oursler. Some religious groups, notably Jehovah's Witnesses and proponents of the King-James-Only movement, make prominent use of the name. In Mormonism, "Jehovah" is thought to be the name by which Jesus was known prior to his birth; references to "the " in the KJV Old Testament are therefore understood to be references to the pre-mortal Jesus. God the Father, who is regarded as a