hat tip: Mystagogy

“ The Apostles almost always fasted .”
Saint John Chrysostom (Sermon 57 on the Gospel of Matthew)

Patristic Testimony Concerning the Fast

The fast of the holy Apostles is very ancient, dating back to the first centuries of Christianity. We have the testimony of St. Athanasius the Great, St. Ambrose of Milan, St. Leo the Great and Theodoret of Cyrrhus regarding it. The oldest testimony regarding the Apostles Fast is given to us by St. Athanasius the Great (†373). In his letter to Emperor Constance, in speaking of the persecution by the Arians, he writes: “During the week following Pentecost, the people who observed the fast went out to the cemetery to pray.” “The Lord so ordained it,” says St. Ambrose (†397), “that as we have participated in his sufferings during the Forty Days, so we should also rejoice in his Resurrection during the season of Pentecost. We do not fast during the season of Pentecost, since our Lord Himself was present amongst us during those days … Christ’s presence was like nourishing food for the Christians. So too, during Pentecost, we feed on the Lord who is present among us. On the days following his ascension into heaven, however, we again fast” (Sermon 61). St. Ambrose basis this practice on the words of Jesus concerning his disciples in the Gospel of Matthew 9:14, 15: “Can the wedding guests mourn as long as the bridegroom is with them? The days will come, when the bridegroom is taken away from them, and then they will fast.”

St. Leo the Great (†461) says: “After the long feast of Pentecost, fasting is especially necessary to purify our thoughts and render us worthy to receive the Gifts of the Holy Spirit … Therefore, the salutary

Read more http://thehandmaid.wordpress.com/2012/06/11/the-apostles-fast/