Luke 11:5

This parable is not found in any one of the evangelists, except St. Luke. Our Saviour having taught his disciples the aforesaid form of prayer, now shews them the utility and efficacy of prayer in general. He wishes to inculcate the necessity of perseverance in prayer. A friend comes to borrow of another friend at an unseasonable hour; his request is refused; he insists, and obtains, by his perseverance, what he could not have gained without it. Thus also the Almighty wishes to be importuned; he wishes us to pray with zeal and perseverance. this is the model we ought to follow. (Calmet) --- God would not exhort us so earnestly to pray, unless he was ready to grant our petitions. Let us blush at our sloth: he is more ready to give than we are to receive. (St. Augustine)