Fasting is one of the most powerful and least practiced spiritual disciplines available to the believer. Throughout the Bible, God's people turned to fasting in times of great need, great decision, and great seeking after God.
Moses fasted forty days on the mountain with God. David fasted in times of deep distress. Esther called the people to fast before she approached the king. The early church fasted and prayed before sending out missionaries. Jesus Himself fasted forty days in the wilderness before beginning His public ministry.
Fasting is not a way to earn God's favor or to twist His arm. It is a way of expressing to God — and to ourselves — that we are serious about seeking Him. It is a way of saying, "Lord, I want You more than I want food. I want Your presence more than I want comfort."