.. I've only been to a couple of healing revivals .. .. At one, the "healer" would yell be healed . And then push them in the head and knock them down . And then say be gone you evil spirits . And another thing was happening at the same time . There were ushers passing plates for a donation . I got up and walked out .. .. The other one I was at followed the Bible . They prayed over Olive oil and anointed each person before laying hands on them (James 5:14) . There was a very calm moving of the spirit there and many were healed, not all .. .. I am very skeptical of healing ministries the don't follow the Bible in their healing . Pushing some one down is not being slain in the spirit . It is showmanship . I have very seldom seen a healing on TV where they anoint the person before they lay hands on them .. .. An angel has nothing to do with the power of healing . Healing comes from the power of the Holy Spirit within you . Also wherever the power of the Holy Spirit is being manifested the devil is nowhere to be found . Darkness can't be in the Light ..