Bible Verses About demon appearance

For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.

And no marvel; for Satan himself is transformed into an angel of light.

For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.

Be not forgetful to entertain strangers: for thereby some have entertained angels unawares.

Do ye think that the scripture saith in vain, The spirit that dwelleth in us lusteth to envy?

Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour:

My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:

Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.

Yet Michael the archangel, when contending with the devil he disputed about the body of Moses, durst not bring against him a railing accusation, but said, The Lord rebuke thee.

And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him.

And I stood upon the sand of the sea, and saw a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy.

And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.