This book is about the Jezebel spirit. 
The harlot spirit in the church is the pretending of obedience to God and yet having an affair with the world. It is idolatrous. This deceitful spirit seeks to establish its demonic pattern in the home, cutting off Godly leadership in the families and in so doing, allowing the spirit of deception to attack the women and children. This master spirit seeks to impress itself and establish a demonic pattern by weaving its web of deception (Job 8:14) The spirit of deception is a counterfeit spirit, often manifesting itself in harlotry and manipulation especially in the church. The Bible says that you shall know them by their fruits. (Matthew 7:20)