Please comment on fasting.
Fasting was never a commandment of God, even under the law (except on the day of atonement). Fasting is a choice of a person who is so engrossed with a spiritual need that they would chose rather than eating to spend the time in God’s word and prayer. It is never so that God would do something, but that we would do something. Those who think that God will answer their prayers if they can prove to him their sincerity or who think that by their much praying God will hear them are practicing paganism (Matthew 6:7).
The purpose of prayer is fellowship with God. Praying in the Spirit is praying in accordance to God’s word and will as revealed in the Bible. Prayer is for peace and encouragement in doing those things God would have us do (Philippians 4:5-13).