This is no voluntary confession followed up by a reward to the utterer, but one extorted by the compulsion of necessity. A runaway slave, when after long time he first beholds his master, straight thinks only of deprecating the scourge; so the daemons, seeing the Lord suddenly moving upon the earth, thought He was come to judge them. Some absurdly suppose that these daemons knew the Son of God, while the Devil knew Him not, because their wickedness was less than his. But all the knowledge of the disciple must be supposed in the Master.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).