Atos 1

Atos 1:13

Now although they lived beforehand the life of freedom, as a pledge, yet they did not receive this freedom in themselves until they had first of all laboured in the life of abstinence, for it is written concerning them that immediately our Redeemer was taken up they returned to that upper chamber in which they were abiding, and that they lived there with much fasting, and in close confinement, and with sincere prayers, and bitter weeping, and that afterwards they were held to be worthy to receive the Paraclete. And if from the ascension of Christ into heaven, unto the descent of the Spirit the days of their abstinence were few, we must learn that they also tarried in this service of fasting and abstinence after they had received the Spirit, and in every place is it written concerning them that they fasted and prayed. — 13 Ascetic Discourses, Discourse 11 -- On Abstinence