It was said of one of the elders that he persevered in a fast of seventy weeks, eating only once a week. The elder ask God to reveal to him the meaning of a certain Scripture text, and God would not reveal it to him. So he said to himself: Look at all the work I have done without getting anywhere! I will go to one of the brothers and ask him. When he had gone out and closed the door and was starting on his way an angel of the Lord was sent to him, saying: The seventy weeks you fasted did not bring you any closer to God, but now that you have humbled yourself and set out to ask your brother, I am sent to reveal the meaning of that text. And opening to him the meaning which he sought, he went away.
Quoted in Thomas Merton, The Wisdom of the Desert