Mark 1:24

Mark 1:24. "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." The devils were exceedingly jealous of Christ; they understood of old that the Son of God was to come into the world to destroy them, and they dreaded that destruction. It is probable that Christ came in a manner very unexpected to them, as well as to the Jews; but yet they were sensible who he was, they seemed to think that Christ appeared in so low and obscure a manner, out of some secret design against them; that he came in disguise that they might not know of it, that he might some way or other be under better advantage to overthrow them; they therefore are willing to let him know that they knew who he was.

Mark 4:5