* This.
  Mt 12:45  Lu 11:26 
 * by prayer.
  1Ki 17:20-22  2Ki 4:33,34  Mt 17:21  Ac 9:40,41  2Co 12:8  Eph 6:18 
  Jas 5:15 
 * fasting.
  Da 9:3  Ac 14:23  1Co 9:27  2Co 6:5  11:27