2 Timothy 3:5
[These people] maintain an appearance of being godly, but they have denied its power; [you should] turn away from such people.
2 Thessalonians 3:6
Now we command you, brothers, in the name [i.e., by the authority] of our Lord Jesus Christ, that you people stay away from every brother [or sister] who lives an idle life [See note on I Thess. 5:14], and not according to the [inspired] tradition which you received from us.
1 Timothy 5:8
But if anyone does not provide for [the needs of] his own [relatives], and especially for his own [immediate] family, he has denied the faith [i.e., the fundamental beliefs of Christianity], and is worse than an unbeliever.
Matthew 7:15
"Look out for deceiving prophets, who approach you wearing sheep's clothing, but who are [actually] starving wolves in their hearts.
Matthew 23:27-28
"It is too bad for you hypocritical experts in the law of Moses and [you] Pharisees! For you are like white-washed tombs, used for burial [sites], which appear beautiful on the outside, but on the inside are full of the bones and decaying flesh of dead people.
Romans 2:20-24
if you are instructors of the ignorant, and teachers of babies [i.e., immature people] and possess in the law of Moses the [correct] form of knowledge and truth ---
Ephesians 4:14
Then we will no longer be [spiritual] babies, tossed back and forth [by waves], and blown around by every wind of [false] teaching, [deceived] by the clever trickery of people using deceptive schemes.
Romans 16:17-18
Now I urge you, brothers, watch out for those who are causing divisions and occasions for falling [away from God over matters] contrary to the teaching you have learned, and withdraw from them [i.e., stop listening to their false teaching].
2 Thessalonians 3:14
And if any person does not obey our instructions, [given] in this letter, you should take note of him so that you do not associate with him, in hope that he will become ashamed [of his conduct].
1 Timothy 6:5
[and] continual wranglings between people with corrupt minds, who are deprived of the truth. They think that [professing] godliness is a way to obtain [financial] gain.
2 Timothy 2:16
But avoid worldly, empty chatter, for those who practice it will become more and more ungodly,
2 Timothy 2:23
But refuse [to participate in] foolish and stupid arguments, knowing that they produce quarreling.
Titus 1:16
These people claim to know God [as Savior], but they deny Him by their actions, so they are detestable and disobedient and unfit for doing anything good.
Titus 3:10
After you have warned a divisive person twice, have nothing more to do with him [i.e., withdraw spiritual fellowship from him].
2 John 1:10-12
If anyone comes to you [i.e., to your meetings] who does not bring this teaching [about Christ], you should not welcome him into your home or give him [any] greetings [i.e., suggesting approval or endorsement].