Jeremiah 14:15-16
Therefore this is what the LORD says about the prophets who prophesy in My name: I did not send them, yet they say, ‘No sword or famine will touch this land.’ By sword and famine these very prophets will meet their end! / And the people to whom they prophesy will be thrown into the streets of Jerusalem because of famine and sword. There will be no one to bury them or their wives, their sons or their daughters. I will pour out their own evil upon them.

Deuteronomy 13:1-5
If a prophet or dreamer of dreams arises among you and proclaims a sign or wonder to you, / and if the sign or wonder he has spoken to you comes about, but he says, “Let us follow other gods (which you have not known) and let us worship them,” / you must not listen to the words of that prophet or dreamer. For the LORD your God is testing you to find out whether you love Him with all your heart and with all your soul. ...

Matthew 7:15-20
Beware of false prophets. They come to you in sheep’s clothing, but inwardly they are ravenous wolves. / By their fruit you will recognize them. Are grapes gathered from thornbushes, or figs from thistles? / Likewise, every good tree bears good fruit, but a bad tree bears bad fruit. ...

2 Peter 2:1-3
Now there were also false prophets among the people, just as there will be false teachers among you. They will secretly introduce destructive heresies, even denying the Master who bought them—bringing swift destruction on themselves. / Many will follow in their depravity, and because of them the way of truth will be defamed. / In their greed, these false teachers will exploit you with deceptive words. The longstanding verdict against them remains in force, and their destruction does not sleep.

Jeremiah 23:30-32
“Therefore behold,” declares the LORD, “I am against the prophets who steal from one another words they attribute to Me.” / “Yes,” declares the LORD, “I am against the prophets who wag their own tongues and proclaim, ‘The LORD declares it.’” / “Indeed,” declares the LORD, “I am against those who prophesy false dreams and retell them to lead My people astray with their reckless lies. It was not I who sent them or commanded them, and they are of no benefit at all to these people,” declares the LORD.

2 Thessalonians 2:9-12
The coming of the lawless one will be accompanied by the working of Satan, with every kind of power, sign, and false wonder, / and with every wicked deception directed against those who are perishing, because they refused the love of the truth that would have saved them. / For this reason God will send them a powerful delusion so that they believe the lie, ...

Jeremiah 23:16-17
This is what the LORD of Hosts says: “Do not listen to the words of the prophets who prophesy to you. They are filling you with false hopes. They speak visions from their own minds, not from the mouth of the LORD. / They keep saying to those who despise Me, ‘The LORD says that you will have peace,’ and to everyone who walks in the stubbornness of his own heart, ‘No harm will come to you.’

1 John 4:1
Beloved, do not believe every spirit, but test the spirits to see whether they are from God. For many false prophets have gone out into the world.

Jeremiah 5:31
The prophets prophesy falsely, and the priests rule by their own authority. My people love it so, but what will you do in the end?

Matthew 24:11
and many false prophets will arise and deceive many.

2 Timothy 4:3-4
For the time will come when men will not tolerate sound doctrine, but with itching ears they will gather around themselves teachers to suit their own desires. / So they will turn their ears away from the truth and turn aside to myths.

Isaiah 9:15-16
The head is the elder and honorable man, and the tail is the prophet who teaches lies. / For those who guide this people mislead them, and those they mislead are swallowed up.

1 Kings 22:20-23
And the LORD said, ‘Who will entice Ahab to march up and fall at Ramoth-gilead?’ And one suggested this, and another that. / 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.’ ...

Revelation 19:20
But the beast was captured along with the false prophet, who on its behalf had performed signs deceiving those who had the mark of the beast and worshiped its image. Both the beast and the false prophet were thrown alive into the fiery lake of burning sulfur.

Hosea 4:9
And it shall be like people, like priest. I will punish both of them for their ways and repay them for their deeds.