Deuteronomy 18:20-22
But if any prophet dares to speak a message in My name that I have not commanded him to speak, or to speak in the name of other gods, that prophet must be put to death.” / You may ask in your heart, “How can we recognize a message that the LORD has not spoken?” / When a prophet speaks in the name of the LORD and the message does not come to pass or come true, that is a message the LORD has not spoken. The prophet has spoken presumptuously. Do not be afraid of him.

Ezekiel 13:6-9
They see false visions and speak lying divinations. They claim, ‘Thus declares the LORD,’ when the LORD did not send them; yet they wait for the fulfillment of their message. / Haven’t you seen a false vision and spoken a lying divination when you proclaim, ‘Thus declares the LORD,’ even though I have not spoken? / Therefore this is what the Lord GOD says: Because you have uttered vain words and seen false visions, I am against you, declares the Lord GOD. ...

Matthew 7:15
Beware of false prophets. They come to you in sheep’s clothing, but inwardly they are ravenous wolves.

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.

2 Peter 2:1
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.

Micah 3:11
Her leaders judge for a bribe, her priests teach for a price, and her prophets practice divination for money. Yet they lean upon the LORD, saying, “Is not the LORD among us? No disaster can come upon us.”

2 Corinthians 11:13-15
For such men are false apostles, deceitful workers, masquerading as apostles of Christ. / And no wonder, for Satan himself masquerades as an angel of light. / It is not surprising, then, if his servants masquerade as servants of righteousness. Their end will correspond to their actions.

Lamentations 2:14
The visions of your prophets were empty and deceptive; they did not expose your guilt to ward off your captivity. The burdens they envisioned for you were empty and misleading.

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.

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

1 Kings 22:22-23
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 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.

Zechariah 10:2
For idols speak deceit and diviners see illusions; they tell false dreams and offer empty comfort. Therefore the people wander like sheep, oppressed for lack of a shepherd.

Acts 20:29-30
I know that after my departure, savage wolves will come in among you and will not spare the flock. / Even from your own number, men will rise up and distort the truth to draw away disciples after them.

Jeremiah 14:14
“The prophets are prophesying lies in My name,” replied the LORD. “I did not send them or appoint them or speak to them. They are prophesying to you a false vision, a worthless divination, the futility and delusion of their own minds.