Always get it signed, witnessed and notarized. Father Malachi Martin, Derek Prince, Maxwell Whyte, Frank Marzullo, and Dr. Peck have some great advise about exorcisms. It was their detailed religious, ritualistic, and scientific approach that led me to start the Center for Exorcistology. Don't reject their research and procedures just because they are not your religious brand or denomination.
Truth is truth.
Anytime someone conducts a successful exorcism, believe me, the Lord is there. Jesus was accused of casting out demons by Beelzebub the ruler of demons. And if Satan casts out Satan, he is divided against himself. In this statement we find that anyone who performs an exorcism successfully can only do so by the hand of God. How to Stop a Demonic Attack Exorcism Warning Exorcisms are not to be taken lightly.