Luke 9:39
and a spirit seizes him, and suddenly he cries out, and it throws him into a convulsion so that he foams at the mouth; and only with [great] difficulty does it leave him, mauling and bruising him as it leaves.
Mark 5:4-5
For he had often been bound with shackles [for the feet] and with chains, and he tore apart the chains and broke the shackles into pieces, and no one was strong enough to subdue and tame him.
Mark 9:20
They brought the boy to Him. When the [demonic] spirit saw Him, immediately it threw the boy into a convulsion, and falling to the ground he began rolling around and foaming at the mouth.
Mark 9:26
After screaming out and throwing him into a terrible convulsion, it came out. The boy looked so much like a corpse [so still and pale] that many [of the spectators] said, “He is dead!”
Luke 4:35
But Jesus rebuked him, saying,
Luke 8:29
Now He was [already] commanding the unclean spirit to come out of the man. For it had seized him [violently] many times; and he was kept under guard and bound with chains and shackles, but he would break the bonds and be driven by the demon into the desert.
John 8:44
1 Peter 5:8
Be sober [well balanced and self-disciplined], be alert and cautious at all times. That enemy of yours, the devil, prowls around like a roaring lion [fiercely hungry], seeking someone to devour.
Revelation 9:11
They have as king over them, the angel of the abyss (the bottomless pit); in Hebrew his name is Abaddon (destruction), and in Greek he is called Apollyon (destroyer-king).