The twelve apostles formed the inner core of the Lord Jesus Christ’s earthly ministry. They were personally chosen by the Lord Himself, had the power of working miracles, and were inspired to teach and to do extraordinary mission work. On the Feast of Pentecost the Holy Spirit came down on the apostles and they became great, giving witness with the power of the life and death and the resurrection of Lord Jesus as He declared they should. “When the Bridegroom shall be taken from them then they shall fast.” (Matthew 9:15)
The Apostles’ Fast is the oldest fast and the first one kept by the Christian Church. During the Apostles’ Fast, the Holy Spirit spoke to them, “As they ministered to the Lord and Fasted the Holy Spirit said separate me Barnabas and Saul for the work whereunto I have called them. And when they fasted and prayed and laid their hands on them, they sent them away.” (Acts 13:2-3)