Matthew 7:15
"Beware of false prophets, who, indeed, come to you in sheep's clothing, but within are ravening wolves.
Matthew 16:6
And Jesus said to them, "Take heed, and beware of the leaven of the Pharisees and Sadducees."
Matthew 16:12
Then they understood that He did not bid them beware of the leaven of the bread, but of the teaching of the Pharisees and Sadducees.
Mark 4:24
And He said to them, "Take heed what ye hear. With what measure ye mete, it shall be measured to you; and more will be added.
Mark 7:6-14
And He said to them, "Well did Isaiah prophesy concerning you hypocrites, as it has been written, This people honor me with their lips; but their heart is far from Me.
John 10:5
But a stranger they will in no wise follow, but will flee from him; because they know not the voice of strangers."
2 Corinthians 11:13-15
For such men are false apostles, deceitful workers, transforming themselves into apostles of Christ;
Ephesians 4:14
that we may no longer be babes, billow-tossed, and carried about with every wind of teaching, in the sleight of men, in the craftiness suited to the artifice of error;
1 Timothy 4:7
but refuse the profane and old wives fables, and exercise yourself unto godliness;
1 Timothy 6:3-5
If anyone teaches otherwise, and consents not to healthful words, the words of our Lord Jesus Christ, and the teaching according to godliness,
2 Peter 2:1-2
But there arose false prophets also among the people, as among you also there will be false teachers, who, indeed, will stealthily bring in destructive heresies, denying even the Master Who bought them, bringing upon themselves swift destruction:
1 John 4:1
Beloved, believe not every spirit, but try the spirits, whether they are of God; because many false prophets have gone forth into the world.
2 John 1:10
If anyone comes to you, and brings not this teaching, receive him not into your house, and say not to him, "Greeting,"
Revelation 2:2
"I know your works and your toil, and your patience, and that you cannot bear evil men; and you tried those who call themselves apostles, and are not, and found them false;