Jehovah's Witnesses are members of an international restorationist religious denomination of the same name. The religion grew out of the Bible Student Movement, founded in the late 19th century by Charles Taze Russell, an American Protestant evangelist. The name "Jehovah's Witnesses", based on %28King_James%29/Isaiah#Chapter_43" target="_blank">Isaiah 43:10, was adopted at a 1931 convention of Bible Students while under the leadership of _Joseph Franklin Rutherford. Identification of the religion as Christian, among other controversies, is debated largely due to their disputing the Trinity, which most Christian religions regard as a fundamental doctrine.