Beware of false prophets, who come to you in sheep's clothing but inwardly are ravenous wolves.

Matthew 7:15 ESV

Beware of false prophets, who come to you in sheep's clothing but inwardly are ravenous wolves.

Matthew 7:21-23 ESV

“Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but the one who does the will of my Father who is in heaven. On that day many will say to me, ‘Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?’ And then will I declare to them, ‘I never knew you; depart from me, you workers of lawlessness.’

Matthew 24:11 ESV 

And many false prophets will arise and lead many astray.

Matthew 24:24 ESV

For false christs and false prophets will arise and perform great signs and wonders, so as to lead astray, if possible, even the elect.

Mark 7:6-9 ESV

And he said to them, “Well did Isaiah prophesy of you hypocrites, as it is written, “‘This people honors me with their lips, but their heart is far from me; in vain do they worship me, teaching as doctrines the commandments of men.’ You leave the commandment of God and hold to the tradition of men.” And he said to them, “You have a fine way of rejecting the commandment of God in order to establish your tradition!

Mark 13:22 ESV 

For false christs and false prophets will arise and perform signs and wonders, to lead astray, if possible, the elect.

Luke 6:26 ESV

Woe to you, when all people speak well of you, for so their fathers did to the false prophets.

John 8:44 ESV

You are of your father the devil, and your will is to do your father's desires. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he lies, he speaks out of his own character, for he is a liar and the father of lies.

Romans 16:18 ESV

For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naïve.

2 Corinthians 11:13 ESV

For such men are false apostles, deceitful workmen, disguising themselves as apostles of Christ.

2 Corinthians 11:12-15 ESV

And what I do I will continue to do, in order to undermine the claim of those who would like to claim that in their boasted mission they work on the same terms as we do. For such men are false apostles, deceitful workmen, disguising themselves as apostles of Christ. And no wonder, for even Satan disguises himself as an angel of light. So it is no surprise if his servants, also, disguise themselves as servants of righteousness. Their end will correspond to their deeds.

1 Thessalonians 5:21 ESV

But test everything; hold fast what is good.

1 Timothy 4:1-3 ESV

Now the Spirit expressly says that in later times some will depart from the faith by devoting themselves to deceitful spirits and teachings of demons, through the insincerity of liars whose consciences are seared, who forbid marriage and require abstinence from foods that God created to be received with thanksgiving by those who believe and know the truth.

2 Timothy 4:3-4 ESV

For the time is coming when people will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own passions, and will turn away from listening to the truth and wander off into myths.

2 Peter 2:1-3 ESV

But false prophets also arose among the people, just as there will be false teachers among you, who will secretly bring in destructive heresies, even denying the Master who bought them, bringing upon themselves swift destruction. And many will follow their sensuality, and because of them the way of truth will be blasphemed. And in their greed they will exploit you with false words. Their condemnation from long ago is not idle, and their destruction is not asleep.

1 John 4:1-6 ESV

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. By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God, and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you heard was coming and now is in the world already. 

Revelation 2:20 ESV 

But I have this against you, that you tolerate that woman Jezebel, who calls herself a prophetess and is teaching and seducing my servants to practice sexual immorality and to eat food sacrificed to idols.

Revelation 16:13 ESV

And I saw, coming out of the mouth of the dragon and out of the mouth of the beast and out of the mouth of the false prophet, three unclean spirits like frogs.

Revelation 19:20 ESV

And the beast was captured, and with it the false prophet who in its presence had done the signs by which he deceived those who had received the mark of the beast and those who worshiped its image. These two were thrown alive into the lake of fire that burns with sulfur.

Revelation 20:10 ESV

And the devil who had deceived them was thrown into the lake of fire and sulfur where the beast and the false prophet were, and they will be tormented day and night forever and ever.

Deuteronomy 13:1-5 ESV

“If a prophet or a dreamer of dreams arises among you and gives you a sign or a wonder, and the sign or wonder that he tells you comes to pass, and if he says, ‘Let us go after other gods,’ which you have not known, ‘and let us serve them,’ you shall not listen to the words of that prophet or that dreamer of dreams. For the Lord your God is testing you, to know whether you love the Lord your God with all your heart and with all your soul. You shall walk after the Lord your God and fear him and keep his commandments and obey his voice, and you shall serve him and hold fast to him. But that prophet or that dreamer of dreams shall be put to death, because he has taught rebellion against the Lord your God, who brought you out of the land of Egypt and redeemed you out of the house of slavery, to make you leave the way in which the Lord your God commanded you to walk. So you shall purge the evil from your midst.

Deuteronomy 18:20-22 ESV 

But the prophet who presumes to speak a word in my name that I have not commanded him to speak, or who speaks in the name of other gods, that same prophet shall die.’ And if you say in your heart, ‘How may we know the word that the Lord has not spoken?’— when a prophet speaks in the name of the Lord, if the word does not come to pass or come true, that is a word that the Lord has not spoken; the prophet has spoken it presumptuously. You need not be afraid of him.

Jeremiah 5:30-31 ESV

An appalling and horrible thing has happened in the land: the prophets prophesy falsely, and the priests rule at their direction; my people love to have it so, but what will you do when the end comes?

Jeremiah 14:14 ESV 

And the Lord said to me: “The prophets are prophesying lies in my name. I did not send them, nor did I command them or speak to them. They are prophesying to you a lying vision, worthless divination, and the deceit of their own minds.

Jeremiah 23:14 ESV

But in the prophets of Jerusalem I have seen a horrible thing: they commit adultery and walk in lies; they strengthen the hands of evildoers, so that no one turns from his evil; all of them have become like Sodom to me, and its inhabitants like Gomorrah.

Jeremiah 23:16 ESV 

Thus says the Lord of hosts: “Do not listen to the words of the prophets who prophesy to you, filling you with vain hopes. They speak visions of their own minds, not from the mouth of the Lord.

Jeremiah 23:21 ESV

“I did not send the prophets, yet they ran; I did not speak to them, yet they prophesied.

Jeremiah 23:26 ESV

How long shall there be lies in the heart of the prophets who prophesy lies, and who prophesy the deceit of their own heart,

Lamentations 2:14 ESV

Your prophets have seen for you false and deceptive visions; they have not exposed your iniquity to restore your fortunes, but have seen for you oracles that are false and misleading.

Ezekiel 13:6 ESV

They have seen false visions and lying divinations. They say, ‘Declares the Lord,’ when the Lord has not sent them, and yet they expect him to fulfil their word.

Ezekiel 13:9 ESV

My hand will be against the prophets who see false visions and who give lying divinations. They shall not be in the council of my people, nor be enrolled in the register of the house of Israel, nor shall they enter the land of Israel. And you shall know that I am the Lord God.

Ezekiel 22:28 ESV

And her prophets have smeared whitewash for them, seeing false visions and divining lies for them, saying, ‘Thus says the Lord God,’ when the Lord has not spoken.

Micah 3:5 ESV

Thus says the Lord concerning the prophets who lead my people astray, who cry “Peace” when they have something to eat, but declare war against him who puts nothing into their mouths.

Micah 3:11 ESV

Its heads give judgment for a bribe; its priests teach for a price; its prophets practice divination for money; yet they lean on the Lord and say, “Is not the Lord in the midst of us? No disaster shall come upon us.”