Proverbs 14:7
Stay away from a foolish man; you will gain no knowledge from his speech.

Deuteronomy 13:1-4
If a prophet or dreamer of dreams arises among you and proclaims a sign or wonder to you, . . .

1 Kings 22:22-28
And he replied, 'I will go out and be a lying spirit in the mouth of all his prophets.' 'You will surely entice him and prevail, ' said the LORD. 'Go and do it.' . . .

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

Matthew 16:6, 12
"Watch out!" Jesus told them. "Beware of the yeast of the Pharisees and Sadducees." . . .

Mark 4:24
He went on to say, "Pay attention to what you hear. With the measure you use, it will be measured to you, and even more will be added to you.

Mark 7:6-14
Jesus answered them, "Isaiah prophesied correctly about you hypocrites, as it is written: 'These people honor Me with their lips, but their hearts are far from Me. . . .

John 10:5
But they will never follow a stranger; in fact, they will flee from him because they do not recognize his voice."

2 Corinthians 11:13-15
For such men are false apostles, deceitful workers, masquerading as apostles of Christ. . . .

Ephesians 4:14
Then we will no longer be infants, tossed about by the waves and carried around by every wind of teaching and by the clever cunning of men in their deceitful scheming.

1 Timothy 4:7
But reject irreverent and silly myths. Instead, train yourself for godliness.

1 Timothy 6:3-5
If anyone teaches another doctrine and disagrees with the sound words of our Lord Jesus Christ and with godly teaching, . . .

2 Peter 2:1, 2
Now there were also false prophets among the people, just as there will be false teachers among you. They will secretly introduce destructive heresies that even deny the Master who bought them, bringing swift destruction on themselves. . . .

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 John 1:10
If anyone comes to you but does not bring this teaching, do not receive him into your home or even greet him.

Revelation 2:2
I know your deeds, your labor, and your perseverance. I know that you cannot tolerate those who are evil, and you have tested and exposed as liars those who falsely claim to be apostles.