And by watching, I do not mean, merely the rising at night, but also the being sober in our prayers during the day. For such an one is called watchful. Since it is possible both in praying by night to be asleep, and in praying by day to be awake, when the soul is stretched out towards God, when it considers with whom it holds converse, to whom its words are addressed, when it has in mind that angels stand by with fear and trembling, while he approaches gaping and scratching himself.