2 Timothy 3:5
having a form of piety but denying its power; and these avoid.
2 Thessalonians 3:6
And we charge you, brothers, in the name of our Lord Jesus Christ, to withdraw from every brother who walks disorderly and not according to the tradition which you received from us.
1 Timothy 5:8
And if any one provides not for his own, and especially for those of his own house, he has denied the faith, and is worse than an unbeliever.
Matthew 7:15
But beware of false prophets, who come to you in sheep's clothing, but within they are rapacious wolves.
Matthew 23:27-28
Woe to you scribes and Pharisees, hypocrites! For you are like whitewashed tombs, which appear fair without, but within are full of the bones of the dead and of all impurity.
Romans 2:20-24
an instructor of the foolish, a teacher of babes, having the form of knowledge and of the truth in the law;
Ephesians 4:14
that we may be no longer children, driven about like waves and carried about with every wind of doctrine, by the art of men, and the craftiness of deceitful wiles,
Romans 16:17-18
I exhort you, brothers, to observe those that cause dissensions and offenses contrary to the teaching which you learned, and avoid them;
2 Thessalonians 3:14
But if any one obeys not our word by this epistle, mark that one, and have no association with him, that he may be ashamed;
1 Timothy 6:5
and wranglings of men of unsound judgments and destitute of the truth, supposing that piety is gain.
2 Timothy 2:16
But profane and vain words, avoid; for they greatly increase impiety,
2 Timothy 2:23
But foolish and trifling disputes avoid, knowing that they produce contentions;
Titus 1:16
They profess to know God, but by works deny him, being abominable and disobedient, and as to every good work reprobate.
Titus 3:10
A man that is a heretic, after the first and second admonition, reject,
2 John 1:10-12
If any one comes to you and brings not this doctrine, receive him not into your houses, and salute him not;