Atos 9
Philoxenus of Mabbug
Atos 9:9
And again it is written concerning Paul, that before he was baptized, and received the Holy Spirit, he neither ate nor drank for three days, nor rose up from his place, because he was lying upon his face praying, and thus he received the Holy Ghost. And he was occupied in fasting and prayer during the whole of the remaining period of his life after his election, even as he himself testifieth everywhere concerning his fasting, and his prayer, and his many tribulations which he bore for the sake of the Gospel. — 13 Ascetic Discourses, Discourse 11 -- On Abstinence