To overcome the distractions, heavy design, and constant "needs and wants" of the world, choosing the Spirit over the flesh through biblical fasting is incredibly powerful.
Fasting is about emptying ourselves of physical satisfaction in order to be filled with spiritual power. When we fast, we silence our noisy earthly pleasures and needs so that our spirit can hear God clearly.
Fasting without prayer is just a diet. A true biblical fast combines the hunger of the body with the hunger for God's word and presence.
In Galatians 5:17, the flesh and the spirit are in constant conflict. Fasting forces the flesh to submit to the Spirit.
In Matthew 17:21 Jesus indicated that certain spiritual battles require prayer and fasting to be overcome.
In Mark 9:29 Jesus teaches that certain spiritual breakthroughs, obstacles or challenges require depth of faith, prayer and fasting.
Isaiah 58:6–11: Describes a true God-accepted fast—one that breaks the chains of evil, releases heavy burdens, cares for the needy, and brings inner light and renewal.
Daniel 9:3 and Ezra 8:23: Figures in the Old Testament resorted to fasting and earnest prayer to ask God for protection, wisdom, and national or personal repentance.