37. But why do I delay with matters not to the purpose? Let them accept a plain proof that there can be nothing which the Holy Spirit can be said not to have made; and that it cannot be doubted that all subsists through His operation, whether Angels, Archangels, Thrones, or Dominions; since the Lord Himself, Whom the Angels serve, was begotten by the Holy Spirit coming upon the Virgin, as, according to Matthew, the Angel said to Joseph: “Joseph, thou son of David, fear not to take Mary thy wife, for that which shall be born of her is of the Holy Spirit.” S. Matt. i. 20. And according to Luke, he said to Mary: “The Holy Spirit shall come upon thee.” S. Luke i. 35.