Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Beware of Bias!

Despite many helpful insights into the supernatural, Mrs. Penn-Lewis' background leaves much to be desired. From The New International Dictionary of Pentecostal & Charismatic Movements by S.M. Burgess, ed., it is stated that she & F.B. Meyer were instrumental in suppressing the Welsh Revival of 1904-05. She also "took control" of Evan Roberts, the Revival leader, by "censoring his mail & keeping him from the public". He lived in their household for years.In the original book, Jesse Penn-Lewis attributed the ecstatic manifestations of the Revival to demonic influences. She also put Mr. Roberts name (as co-author) on the book to lend it authenticity.Thus, any reader of the charismatic/pentecostal persuasion needs to be aware of this. I recommend Pigs in the Parlor by the Hammonds, plus books by Derek Prince: Spiritual Warfare, They Shall Expel Demons, Blessing or Curse---You Can Choose.