In preparation for a fast I read an excellent book about desiring God through fasting and prayer that I want to commend to you. In A Hunger for God by John Piper he helps us think deeply about why we fast. His main point is that the kind of fast that God wants from us is one where we hunger for God more than food, thirst for God more than water, and desire God more than anything else. We fast because we have an appetite for God. We say with our fast: "O God, I want you." Below are a couple of my favorite quotes.