1 John 4:1
Dear friends, do not believe every spirit, but put the spirits to the test to see whether they are from God; for many false teachers have gone out into the world.
2 Peter 2:1
But there were also false prophets among the people, as there will be teachers of falsehood among you also, who will cunningly introduce fatal divisions, disowning even the Sovereign Lord who has redeemed them, and bringing on themselves swift destruction.
1 John 2:18
Dear children, the last hour has come; and as you once heard that there was to be an anti-Christ, so even now many anti-Christs have appeared. By this we may know that the last hour has come.
1 Thessalonians 5:21
but test all such, and retain hold of the good.
Luke 12:57
"Why, too, do you not of yourselves arrive at just conclusions?
Acts 17:11
The Jews at Beroea were of a nobler disposition than those in Thessalonica, for they very readily received the Message, and day after day searched the Scriptures to see whether it was as Paul stated.
1 Corinthians 12:10
to another the exercise of miraculous powers; to another the gift of prophecy; to another the power of discriminating between prophetic utterances; to another varieties of the gift of 'tongues;' to another the interpretation of tongues.
1 Corinthians 14:29
But if there are Prophets, let two or three speak and let the rest judge.
1 Timothy 4:1
Now the Spirit expressly declares that in later times some will fall away from the faith, giving heed to deceiving spirits and the teachings of demons;
2 John 1:7
For many deceivers have gone out into the world--men who do not acknowledge Jesus as Christ who has come in human nature. Such a one is 'the deceiver' and 'the anti-Christ.'
Revelation 2:2
I know your doings and your toil and patient suffering. And I know that you cannot tolerate wicked men, but have put to the test those who say that they themselves are Apostles but are not, and you have found them to be liars.
Matthew 7:15-16
"Beware of the false teachers--men who come to you in sheep's fleeces, but beneath that disguise they are ravenous wolves.
Matthew 24:4-5
"Take care that no one misleads you," answered Jesus;
Matthew 24:23-26
"If at that time any one should say to you, 'See, here is the Christ!' or 'Here!' give no credence to it.
Mark 13:21
"At that time if any one says to you, 'See, here is the Christ!' or 'See, He is there!' do not believe it.
Luke 21:8
"See to it," He replied, "that you are not misled; for many will come assuming my name and professing, 'I am He,' or saying, 'The time is close at hand.' Do not go and follow them.
Acts 20:29
I know that, when I am gone, cruel wolves will come among you and will not spare the flock;
Romans 16:18-19
For men of that stamp are not bondservants of Christ our Lord, but are slaves to their own appetites; and by their plausible words and their flattery they utterly deceive the minds of the simple.
2 Timothy 3:13
But bad men and impostors will go on from bad to worse, misleading and being misled.