Matthew 7:15
Beware of the false prophets, who come to you in sheeps clothing, but inwardly 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 Pharisees and Sadducees, 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 will be measured to you, and more will be added to you.
Mark 7:6-14
And he said to them, Well did Isaiah prophesy of you hypocrites, as it is written, "This people honoreth me with their lips, but their heart is far from me.
John 10:5
But a stranger they will not follow, but will flee from him; because they know not the voice of strangers.
2 Corinthians 11:13-15
For such are false apostles, deceitful workmen, transforming themselves into apostles of Christ.
Ephesians 4:14
that we may no longer be children, tossed to and fro and borne about by every wind of teaching, through the dishonest tricks of men, and their cunning in the wily arts of error;
1 Timothy 4:7
But avoid the profane and old wives fables; and exercise thyself unto godliness.
1 Timothy 6:3-5
If any one teacheth other doctrine, and assenteth not to sound words, the words of our Lord Jesus Christ, and to the doctrine which is according to godliness,
2 Peter 2:1-2
But there arose false prophets also among the people, as there will be false teachers among you also, who will stealthily bring in destructive factions, even denying the Lord that 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 any one cometh to you, and bringeth not this teaching, receive him not into your house, and do not bid him good speed.
Revelation 2:2
I know thy works, and thy labor, and thy endurance, and that thou canst not bear evil men; and thou didst try those who say they are apostles, and are not, and didst find them liars;