Jesus warned about false prophets in Matt. False prophets teach false doctrine and lead people away from the true gospel message and teaching of God found in the Bible. Each of them distorts the truth sufficient to cause damantion. Fast, Fasting Depriving oneself of food for a period of time for a specific purpose, often spiritual. Fellowship implies sharing common interests, desires, and motivations.
Fellowship requires that time be spent with another communicating, caring, etc.
It carries with it a hint of intimacy. As Christians we fellowship with one another because of our position in Christ, because we are all redeemed and share an intimate personal knowledge of Jesus. The Greek word for fellowship is koinonia . This word is also translated communion in 1 Cor. This is where we get the term the communion supper.