Romans 16:17
I urge you, brothers, to watch out for those who cause divisions and put obstacles in your way that are contrary to the teaching you have learned. Keep away from them.
2 Thessalonians 3:6
In the name of the Lord Jesus Christ, we command you, brothers, to keep away from every brother who is idle and does not live according to the teaching you received from us.
1 Timothy 1:7
They want to be teachers of the law, but they do not know what they are talking about or what they so confidently affirm.
1 Timothy 6:3-5
3. If anyone teaches false doctrines and does not agree to the sound instruction of our Lord Jesus Christ and to godly teaching,
4. he is conceited and understands nothing. He has an unhealthy interest in controversies and quarrels about words that result in envy, strife, malicious talk, evil suspicions
5. and constant friction between men of corrupt mind, who have been robbed of the truth and who think that godliness is a means to financial gain.
2 Timothy 1:13
What you heard from me, keep as the pattern of sound teaching, with faith and love in Christ Jesus.
2 Timothy 2:15-17
15. Do your best to present yourself to God as one approved, a workman who does not need to be ashamed and who correctly handles the word of truth.
16. Avoid godless chatter, because those who indulge in it will become more and more ungodly.
17. Their teaching will spread like gangrene.
2 Timothy 3:16-17
16. All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness,
17. so that the man of God may be thoroughly equipped for every good work.
2 Timothy 4:3-4
3. For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear.
4. They will turn their ears away from the truth and turn aside to myths.
Titus 1:11
They must be silenced, because they are ruining whole households by teaching things they ought not to teach--and that for the sake of dishonest gain.
Titus 2:15
These, then, are the things you should teach. Encourage and rebuke with all authority. Do not let anyone despise you.
Hebrews 13:9
Do not be carried away by all kinds of strange teachings.
2 Peter 2:1-3
1. But there were also false prophets among the people, just as there will be false teachers among you. They will secretly introduce destructive heresies, even denying the sovereign Lord who bought them--bringing swift destruction on themselves.
2. Many will follow their shameful ways and will bring the way of truth into disrepute.
3. In their greed these teachers will exploit you with stories they have made up. Their condemnation has long been hanging over them, and their destruction has not been sleeping.
2 John 1:10
If anyone comes to you and does not bring this teaching, do not take him into your house or welcome him.