Fasting is hungering for God. When you fast food, you help create a deeper hunger for God activating your spiritual hunger hormone. It may not feel enjoyable physically when we fast, but you are fulfilling your spiritual hunger.
Paul's contributions to our understanding of the powers of evil is to sum them up in the phrase 'principalities and powers'. For him they...
“And when you fast, do not look gloomy like the hypocrites, for they disfigure their faces that their fasting may be seen by others....
Pastor Stewart McAlpine presents a sermon on how Jesus chose the Twelve Apostles - "One day soon afterward Jesus went up on a mountain...