I've lifted this proposition from some sermon whose title has escaped me. It was said in reference to the following passage from the gospel according to St. Luke (11:5-8): 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. Importunity is called for in prayer, and a key element in importunity—as any toddler vying for his mother's attention knows—is repetition. But it is not as if the Lord were our mother, too busy to pay attention to us at the moment. Why do...