The Watchtower bases its beliefs and doctrines on the original and expanded teachings of Charles Taze Russell, Judge Joseph Franklin Rutherford, and their successors.
Ibinabase ng The Watchtower ang kanilang mga paniniwala at doktrina sa orihinal na mga turo ni Carles Taze Russel, JudgeJoseph Franklin Rutherford at ang kanilang mga kahalili.