Matthew 7:15
"Look out for deceiving prophets, who approach you wearing sheep's clothing, but who are [actually] starving wolves in their hearts.
Matthew 12:43
But when an evil spirit has been driven out of a person, it roams through desert regions trying to find rest but cannot find it.
Luke 11:20
But, if I drive out evil spirits by the finger of God [i.e., by God's direct, supernatural intervention], then [that is evidence that] the kingdom of God has come into your midst [i.e., by my presence and ministry].
2 Corinthians 11:13-15
For such men are false apostles; they are deceitful workers, who disguise themselves as [true] apostles of Christ.
2 Peter 2:1-3
But just as there were false prophets among the people before, there will also be false teachers among you [Christians]. They will privately teach harmful doctrines that destroy people [spiritually], by even denying [that Jesus is] the Master, [and thereby] destroying themselves quickly.
2 Peter 2:15-19
They strayed away [from God] by taking the wrong road like Balaam, the son of Bosor did, who loved the reward for doing wrong.
1 John 4:1-2
Loved ones, do not believe [the message of] every spirit [i.e., every person claiming to be a teacher], but test the spirits [i.e., require proof that they and their message are genuine] to see whether they represent God [or not], because many false prophets have begun circulating throughout the world.
Revelation 16:13-14
And I saw three evil spirits that looked like frogs; [one was] coming out of the mouth of the dragon, [one] out of the mouth of the beast, and [one] out of the mouth of the false prophet.
Revelation 18:2
And he called out with a loud voice, saying, "Fallen! The great Babylon has fallen, and has become a place where demons live, and a haunt for every evil spirit and every filthy and obnoxious bird {{Some ancient manuscripts add "and every filthy and obnoxious animal"}}.
Revelation 19:20
But the beast was captured, along with the false prophet [See 16:13], who performed [supernatural] signs in his presence. [He had performed these signs] to deceive those who had received the mark of the beast and those who worshiped his statue. [See 13:15-16]. The beast and the false prophet were both thrown alive into the lake of fire that burns with sulphur.
Revelation 20:1-3
Then I saw an angel coming down from heaven, holding the key to the pit and a huge chain in his hand.