Hilary of Poitiers

Also he therefore says that it needed only a word to heal his son, because all the salvation of the Gentiles is of faith, and the life of them all is in the precepts of the Lord; therefore he continues saying, For I am a man set under authority, having soldiers under me; and I say to this man, Go, and he goeth; to another, Come, and he cometh; and to my servant, Do this, and he doeth it.