Augustine of Hippo
Catena Aurea · Markusevangelium 1
And there was in their synagogue a man with an unclean spirit; and he cried out, Saying, Let us alone; what have we to do with thee, thou Jesus of Nazareth? art thou come to destroy us? I know thee who thou art, the Holy One of God. And Jesus rebuked him, saying, Hold thy peace, and come out of him. And when the unclean spirit had torn him, and cried with a loud voice, he came out of him. And they were all amazed, insomuch that they questioned among themselves, saying, What thing is this? what new doctrine is this? for with authority commandeth he even the unclean spirits, and they do obey him. And immediately his fame spread abroad throughout all the region round about Galilee.
(ubi sup.) For He was known to them in that degree in which He wished to be known; and He wished as much as was fitting. He was not known to them as to the holy Angels, who enjoy Him by partaking of His eternity according as He is the Word of God; but as He was to be made known in terror, to those beings from whose tyrannical power He was about to free the predestinate. He was known therefore to the devils, not in that He is eternal Life, but by some temporal effects of His Power, which might be more clear to the angelic senses of even bad spirits than to the weakness of men.