Angels and Demons, A Biblical Introduction to the Supernatural provides a concise exploration of biblical texts regarding the existence and ministries of supernatural beings such as Seraphim, Cherubim, and Ophanim, unseen realities, and spiritual warfare. This is a must read for those seeking a deeper understanding of the celestial realm. Throughout the book, biblical references are used to describe the presence and action, seen and unseen, of angels and other heavenly beings in the world over the past several thousand years. The three spheres, or choirs, of angels are identified and their attendant members carefully explained. Other entities - demons or Nephilim - are the children of fallen angels and human women and work on earth to distract people and turn them from God. It is these spirits, according to Stanek, that answer the call of people who try to delve into the supernatural with mediums, s ances and Ouija boards so it is imperative to avoid these temptations. It is also emphatically stated that prayers to God are the way to ask for intervention for our problems and it is only through His will that an angel may be sent to intercede.