1 John 4:1
Do not believe every spirit, beloved, but test the spirits to see whether they are of God; for many false prophets are gone out into the world.
2 Peter 2:1
But there were false prophets, too, among the people, just as among you also there will be false teachers. These will secretly bring in destructive sects, denying even the Master who bought them, and bringing swift ruin upon themselves.
1 John 2:18
My children, this is the last hour, and as you have heard that an antichrist was coming, and now many antichrists are already risen, whence we may know that it is the last hour.
1 Thessalonians 5:21
But try all, holding fast to the good.
Luke 12:57
"And why do you not, even yourselves, judge what is right?
Acts 17:11
The Jews of Berea were more noble than those in Thessalonica, in that they very readily received the message with all readiness of mind, and day after day searched the Scriptures to see whether these things were so.
1 Corinthians 12:10
to another the powers which work miracles, to another prophecy, to another the discernment of spirits; to another varieties of tongues, to another the interpretation of tongues.
1 Corinthians 14:29
Let the prophets speak by two or three, and let the others exercise their judgment.
1 Timothy 4:1
Now the Spirit distinctly declares that in latter days there will be some who will fall away from the faith, by listening to spirits of error, and to teachings of demons
2 John 1:7
I say this because many deceivers are gone forth into the world, those who deny the coming of Jesus Christ in the flesh. This is the deceiver and the Antichrist.
Revelation 2:2
I know your works and your toil and stedfastness, and that you cannot endure evil men, and that you tested those who called themselves apostles, though they are not, and how you found them false.
Matthew 7:15-16
"Beware of the false prophets who come to you in sheep's clothing, but within they are ravening wolves.
Matthew 24:4-5
"Take care," Jesus answered, "that no one mislead you;
Matthew 24:23-26
"If at that time any one should say to you, 'See, here is the Christ!' or 'There he is!' believe him not.
Mark 13:21
"At that time if any one tell you, 'See, here is Christ,' or 'See, there he is,' do not believe it;
Luke 21:8
"Take heed," he answered, "that you are not led astray, for many will come in my name, saying, 'I am he,' and 'The time is close at hand.' Do not go and follow them.
Acts 20:29
I know that after my departure fierce wolves will come among you, and they will not spare the flock;
Romans 16:18-19
Turn away from them. For men of that stamp are not the slaves of Christ, but are slaves to their own appetites. By their smooth and fair speech they beguile the hearts of the innocent.
2 Timothy 3:13
But wicked men and impostors will go on from bad to worse, deceiving others, and being themselves deceived.