Exorcisms can only be performed by a Catholic Priest, not a lay person. Deliverance can only be performed by those who are trained and have the gift for this ministry. It can be dangerous for those who are not trained and who may engage in this ministry out of their own personal curiosity or gain. Adam Blai who features in this video is not an exorcist, but assists Exorcist Priests and also educates Priests on exorcism.
Following Profile from Catholic Answers (http://www.catholic.com/profiles/adam-blai)
Adam Blai (Bly) is a Church decreed expert on religious demonology and exorcism in the
diocese. He is an auxiliary member of the International Association of
Exorcists based in Rome.
Over the last decade he has helped educate priests on exorcism at national
conferences, seminars, and through consultation on many cases in a number of
diocese. He has assisted at many dozens of solemn exorcisms, house exorcisms,
and resolutions of hauntings. In addition to Church cases he reaches out to
educate people on the current paranormal craze, the dangers therein, and more
ethical ways to resolve hauntings. He has put together a pastoral manual for
priests on exorcism and resolving human spirit hauntings.
He has a masters in adult clinical psychology from
and is all but dissertation (ABD) for his Ph.D. His professional life has been
spent working in the Penn State prison system as a
Psychological Services Specialist where he has done hundreds of psychological
evaluations for the parole process and worked with the full range of mental
illness and human evil. Pennsylvania
You can find Adam's book, Possession, Exorcism, and Hauntings, at Amazon.com.For more information on this area and excellent advice go to Adam Blai's website at http://www.religiousdemonology.com/index.html