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
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.
1 John 2:18
Children, it is the last hour, and as you have heard that antichrist is coming, so now many antichrists have come. Therefore we know that it is the last hour.
1 Thessalonians 5:21
but test everything; hold fast what is good.
Luke 12:57
"And why do you not judge for yourselves what is right?
Acts 17:11
Now these Jews were more noble than those in Thessalonica; they received the word with all eagerness, examining the Scriptures daily to see if these things were so.
1 Corinthians 12:10
to another the working of miracles, to another prophecy, to another the ability to distinguish between spirits, to another various kinds of tongues, to another the interpretation of tongues.
1 Corinthians 14:29
Let two or three prophets speak, and let the others weigh what is said.
1 Timothy 4:1
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,
2 John 1:7
For many deceivers have gone out into the world, those who do not confess the coming of Jesus Christ in the flesh. Such a one is the deceiver and the antichrist.
Revelation 2:2
"'I know your works, your toil and your patient endurance, and how you cannot bear with those who are evil, but have tested those who call themselves apostles and are not, and found them to be false.
Deuteronomy 13:1-5
"If a prophet or a dreamer of dreams arises among you and gives you a sign or a wonder,
Proverbs 14:15
The simple believes everything, but the prudent gives thought to his steps.
Jeremiah 5:31
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 29:8-9
For thus says the LORD of hosts, the God of Israel: Do not let your prophets and your diviners who are among you deceive you, and do not listen to the dreams that they dream,
Matthew 7:15-16
"Beware of false prophets, who come to you in sheep's clothing but inwardly are ravenous wolves.
Matthew 24:4-5
And Jesus answered them, "See that no one leads you astray.
Matthew 24:23-26
Then if anyone says to you, 'Look, here is the Christ!' or 'There he is!' do not believe it.
Mark 13:21
And then if anyone says to you, 'Look, here is the Christ!' or 'Look, there he is!' do not believe it.
Luke 21:8
And he said, "See that you are not led astray. For many will come in my name, saying, 'I am he!' and, 'The time is at hand!' Do not go after them.
Acts 20:29
I know that after my departure fierce wolves will come in among you, not sparing the flock;
Romans 16:18-19
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 naive.
2 Timothy 3:13
while evil people and impostors will go on from bad to worse, deceiving and being deceived.