Theophylact of Ohrid — as excerpted in the Catena Aurea on Luke 11:5-8

“Or else, The midnight is the end of life, at which many come to God. But the friend is the Angel who receives the soul. Or, the midnight is the depth of temptations, in which he who has fallen, seeks from God three loaves, the relief of the wants of his body, soul, and spirit; through whom we run into no danger in our temptations. But the friend who comes from his journey is God Himself, who proves by temptations who has nothing to set before Him, and who is weakened in temptation. But when He says, And the door is shut, we must understand that we ought to be prepared before temptations. But after that we have fallen into them, the gate of preparation is shut, and being found unprepared, unless God keep us, we are in danger.”