Fasting is spoken of many times throughout the Bible.  There is a proper way to fast and an improper way to fast.  According to the Bible, under the New Testament will, there is no set command that requires fasting to be implemented as an act of worship or obedience to the new Testament Scriptures.  Under the Jewish Old Testament law, fasting was mandatory on an annual basis on the Day of Atonement.  Interestingly enough though, some Pharisee's voluntarily fasted two times a week in an attempt to impress the people with their “holiness” (Luke 18:12).