Romans 16:17 NIV

1 Timothy 6:3-5 NIV
If anyone teaches otherwise and does not agree to the sound instruction of our Lord Jesus Christ and to godly teaching, they are conceited and understand nothing. They have an unhealthy interest in controversies and quarrels about words that result in envy, strife, malicious talk, evil suspicions and constant friction between people of corrupt mind, who have been robbed of the truth and who think that godliness is a means to financial gain.

2 Thessalonians 3:6 NIV
In the name of the Lord Jesus Christ, we command you, brothers and sisters, to keep away from every believer who is idle and disruptive and does not live according to the teaching you received from us.

2 Timothy 3:5 NIV
having a form of godliness but denying its power. Have nothing to do with such people.

Jude 1:19 NIV
These are the people who divide you, who follow mere natural instincts and do not have the Spirit.