this kinde] God may at some time, for causes best known to himself, give more power to some evil spirits then to others. They that have had long possession, will hardly part with it, Mark 9 21, 29. and fasting] Which is used on extraordinary occasions, as a means to make our prayers the more ervent, 2 Chronicles 20:3. Ezra 8:21. Dan. 9 3. Jonah 3:5; Jonah 3:7-8.