Today more than ever the true believer needs to be on his guard against the false teachings of churches and cults, whose doctrines, while puporting to be Christian, do not accord with the truth as revealed in the Bible. In this book, the beliefs of Spiritism, Christian Science, Unity, Unitarianism, Jehovah's Witnesses, Theosophy, Christadelphianism and Mormonism are considered with insight and understanding and their errors and weaknesses are exposed in the light of Scripture teaching. Briefer summaries of a score or more of cults are also included.