This book is a systematic study going through the Bible with its references of fasting and abstinence. Fasting is found throughout scriptures and in many of the Church Fathers such as: St. Augustine, St. John Chrysostom, Saint Clement of Rome, and others connected fasting with penance or purification. The biblical references throughout this work help define the nature and purpose of fasting, the categories and types of fasting in the past and today.