Cyril of Alexandria
Catena Aurea · Lukasevangelium 11
And he said unto them, Which of you shall have a friend, and shall go unto him at midnight, and say unto him, Friend, lend me three loaves; For a friend of mine in his journey is come to me, and I have nothing to set before him? And he from within shall answer and say, Trouble me not: the door is now shut, and my children are with me in bed; I cannot rise and give thee. I say unto you, Though he will not rise and give him, because he is his friend, yet because of his importunity he will rise and give him as many as he needeth.
The Saviour had before taught, in answer to the request of His apostles, how men ought to pray. But it might happen that those who had received this wholesome teaching, poured forth their prayers indeed according to the form given to them, but carelessly and languidly, and then when they were not heard in the first or second prayer, left off praying. That this then might not be our case, Heshews by means of a parable, that cowardice in our prayers is hurtful, but it is of great advantage to have patience in them. Hence it is said, And he says unto them, Which of you shall have a friend.