1 Corinthians 11:19
For it is necessary that there should be heresies among you, that the approved may be manifest among you.
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 18:7
Woe to the world because of offenses! For offenses must necessarily come, but woe to that man by whom the offense comes!
Luke 17:1
AND he said to his disciples, It is inevitable that offenses should come; but woe to him by whom they come;
Acts 20:30
and of yourselves men will arise speaking perverse things, to draw away disciples after them.
Titus 3:10
A man that is a heretic, after the first and second admonition, reject,
Luke 2:35
and a sword shall pierce your own soul also, that the thoughts of many hearts may be revealed.
Acts 5:17
And the chief priest arose, and all those with him, being the sect of the Sadducees, and were filled with wrath,
Acts 15:5
But some of those of the sect of the Pharisees who had believed, rose and said, that it is necessary to circumcise them, and to command them to keep the law of Moses.
Acts 24:5
For finding this man a pestilence and a mover of sedition among all the Jews throughout the world, and a chief of the sect of the Nazoraeans,
Acts 24:14
But this I confess to you, that in the way which they call a heresy, so worship I the God of my fathers; believing all things written in the law and the prophets,
Acts 26:5
who knew me from the first, if they would testify, that according to the strictest sect of our religion I lived a Pharisee.
Acts 28:22
But we would like to hear from you what you think, for it is known to us concerning this sect, that it is everywhere spoken against.
2 Corinthians 13:5-7
Try yourselves, whether you are in the faith; prove yourselves; or know you not yourselves that Christ is in you unless you are reprobates?
Galatians 5:20
idolatry, magic, enmities, strife, envy, anger, contentions, dissensions, heresies,
1 Timothy 4:1-2
But the Spirit says expressly, that in the last times some shall apostatize from the faith, attending to lying spirits and doctrines of demons,
2 Peter 2:1-2
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;