New cults pop up every once a while, claiming to have found a new Holy Book that renders existing Holy Books obsolete. You might not approve of them since ther

New cults pop up every once a while, claiming to have found a new Holy Book that renders existing Holy Books obsolete. You might not approve of them since there's no objective way to measure the validity of religions/religious doctrines, but they're there. Some of the more successful ones in relatively recent times are for example Martin Luther, Joseph Smith, etc.