This document discusses the definition and stages of exorcism. It defines exorcism as compelling a demonic entity to leave its host through the power of God, not by battling the demon. It describes potential causes of demonic possession like involvement in occult practices. The document outlines biblical symptoms and the Catholic Church's criteria for possession. It discusses how Christians can potentially become possessed if their faith wavers. Finally, it explains that possession occurs in stages as a demon gains more influence over its host through their sins.