When you are weary of praying, and do not receive, consider how often you have heard a poor man calling upon you, and have not listened to him, and he has not been angry nor insulted you.
[St. John Chrysostom, Homily XI on First Thessalonians]
Abba Lot went to see Abba Joseph and said to him, ‘Abba as far as I can I say my little office, I fast a little, I pray and meditate, I live in peace and as far as I can, I purify my thoughts. What else can I do?’ then the old man stood up and stretched his hands towards heaven. His fingers became like ten lamps of fire and he said to him, ‘If you will, you can become all flame.’