Matthew 8:28-34
When Jesus arrived on the other side in the region of the Gadarenes, He was met by two demon-possessed men coming from the tombs. They were so violent that no one could pass that way. / “What do You want with us, Son of God?” they shouted. “Have You come here to torture us before the appointed time?” / In the distance a large herd of pigs was feeding. ...

Luke 8:30
“What is your name?” Jesus asked. “Legion,” he replied, because many demons had gone into him.

Matthew 12:43-45
When an unclean spirit comes out of a man, it passes through arid places seeking rest and does not find it. / Then it says, ‘I will return to the house I left.’ On its return, it finds the house vacant, swept clean, and put in order. / Then it goes and brings with it seven other spirits more wicked than itself, and they go in and dwell there. And the final plight of that man is worse than the first. So will it be with this wicked generation.”

Luke 11:24-26
When an unclean spirit comes out of a man, it passes through arid places seeking rest and does not find it. Then it says, ‘I will return to the house I left.’ / On its return, it finds the house swept clean and put in order. / Then it goes and brings seven other spirits more wicked than itself, and they go in and dwell there. And the final plight of that man is worse than the first.”

James 2:19
You believe that God is one. Good for you! Even the demons believe that—and shudder.

Revelation 12:9
And the great dragon was hurled down—that ancient serpent called the devil and Satan, the deceiver of the whole world. He was hurled to the earth, and his angels with him.

Revelation 16:13-14
And I saw three unclean spirits that looked like frogs coming out of the mouths of the dragon, the beast, and the false prophet. / These are demonic spirits that perform signs and go out to all the kings of the earth, to assemble them for battle on the great day of God the Almighty.

Acts 19:15
But one day the evil spirit responded, “Jesus I know, and I know about Paul, but who are you?”

Ephesians 6:12
For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this world’s darkness, and against the spiritual forces of evil in the heavenly realms.

1 Peter 5:8
Be sober-minded and alert. Your adversary the devil prowls around like a roaring lion, seeking someone to devour.

Genesis 6:2-4
the sons of God saw that the daughters of men were beautiful, and they took as wives whomever they chose. / So the LORD said, “My Spirit will not contend with man forever, for he is mortal; his days shall be 120 years.” / The Nephilim were on the earth in those days—and afterward as well—when the sons of God had relations with the daughters of men. And they bore them children who became the mighty men of old, men of renown.

Job 1:6-7
One day the sons of God came to present themselves before the LORD, and Satan also came with them. / “Where have you come from?” said the LORD to Satan. “From roaming through the earth,” he replied, “and walking back and forth in it.”

Job 2:1-2
On another day the sons of God came to present themselves before the LORD, and Satan also came with them to present himself before Him. / “Where have you come from?” said the LORD to Satan. “From roaming through the earth,” he replied, “and walking back and forth in it.”

1 Kings 22:21-23
Then a spirit came forward, stood before the LORD, and said, ‘I will entice him.’ ‘By what means?’ asked the LORD. / And he replied, ‘I will go out and be a lying spirit in the mouths of all his prophets.’ ‘You will surely entice him and prevail,’ said the LORD. ‘Go and do it.’ / So you see, the LORD has put a lying spirit in the mouths of all these prophets of yours, and the LORD has pronounced disaster against you.”

2 Kings 6:17
Then Elisha prayed, “O LORD, please open his eyes that he may see.” And the LORD opened the eyes of the young man, and he saw that the hills were full of horses and chariots of fire all around Elisha.