Ambrose of Milan
Catena Aurea · Lukasevangelium 12
And I say unto you my friends, Be not afraid of them that kill the body, and after that have no more that they can do. But I will forewarn you whom ye shall fear: Fear him, which after he hath killed hath power to cast into hell; yea, I say unto you, Fear him. Are not five sparrows sold for two farthings, and not one of them is forgotten before God? But even the very hairs of your head are all numbered. Fear not therefore: ye are of more value than many sparrows.
Our Lord then had instilled the virtue of simplicity, had awakened a courageous spirit. Their faith alone was wavering, and well did He strengthen it by adding with respect to things of less value, Are not five sparrows sold for two farthings? and not one of them is forgotten before God. As if He said, If God forgets not the sparrows, how can He man?