Deliverance is a field few strive to go into, this is because of the dangers involved with this type of ministry. In this ministry your standing with God and Christ is very important. If you feel you cannot stand in the face of adversity and retaliation then this field is not for you. Not to discourage you. If you feel called to this ministry or are in dire need. Develop the foundation required before stepping into the field. This is speaking from experience.