Acts 20:30
and of yourselves men will arise speaking perverse things, to draw away disciples after them.
1 Timothy 1:19-20
having faith and a good conscience, which some having cast away have suffered shipwreck of the faith;
1 John 2:19
They went out from us, but they were not of us; for if they had been of us they would have continued with us; but [they went out from us] that they might be manifest that they are not all of us.
Matthew 23:15
Woe to you scribes and Pharisees, hypocrites! For you compass the sea and the dry land to make one proselyte; and when he is gained you make him twice as much a child of hell as yourselves.
Matthew 26:21-25
And as they were eating, he said, I tell you truly, that one of you will betray me.
Acts 5:36-37
For before these days Theudas arose, saying that he was somebody, to whom a number of men, about four hundred, adhered, who was destroyed, and all who obeyed him passed away and came to nothing.
Acts 11:26
and found and brought him to Antioch. And he was with them, and they met a whole year with the church and taught a great multitude; and the disciples first took the name of Christians at Antioch.
Acts 21:38
Are you not the Egyptian who before these days excited a sedition, and led out into the wilderness the four thousand men who were murderers?
1 Corinthians 1:12-15
I mean this; that each one of you says I indeed am of Paul, and I of Apollos, and I of Cephas, and I of Christ.
Galatians 6:12-13
Those who wish to make a fair appearance in the flesh compel you to be circumcised, only that they may not be persecuted for the cross of Christ.
1 Timothy 5:13
and at the same time also, being idle, they learn to go from house to house, and not only are they idle, they are also tattlers and mischief makers, saying what they ought not.
1 Timothy 6:5
and wranglings of men of unsound judgments and destitute of the truth, supposing that piety is gain.
2 Timothy 2:17-18
and their word will eat like a gangrene; of whom are Hymenaeus and Philetus,
2 Timothy 4:3-4
for the time will come when they will not endure sound instruction, but will accumulate for themselves teachers according to their desires, pleasing their ear,
2 Peter 2:1-3
But there were also false prophets among the people, as there shall also be false teachers among you, who shall bring in by stealth destructive heresies, even denying the master that bought them, bringing on themselves swift destruction;
2 Peter 2:18
For speaking extravagant words of vanity, they entice with carnal desires of lewdness those scarcely escaped from them, those living in error,
2 John 1:7
For many deceivers have gone out into the world, who do not confess Jesus Christ coming in the flesh; this is the deceiver, and the antichrist.
Jude 1:4-16
For some men have come in by deception, who were of old appointed to this judgment, impious, changing the grace of our God into lewdness, and denying our only master and Lord, Jesus Christ.
Revelation 2:6
But you have this, that you hate the works of the Nicolaitans, which I also hate.