2 Peter 2:1-3
But there were also false prophets among the people, even as there will be false teachers among you; who will privately introduce destructive sects, denying even the Lord who bought them, bringing on themselves swift destruction.
2 Peter 3:16-18
As, indeed, in all his epistles, speaking in them concerning these things: in which there are some things hard to be understood, which the untaught and unstable wrest, as they do also the other scriptures, to their own destruction.
1 John 2:21
I have not written to you because you know not the truth, but because you know it, and that no lie is of the truth.
1 John 2:27
but the unction which you have received from him abides in you; and you have no need that any one should teach you, unless the same unction teaches you concerning all things, and is truth, and is no lie: and as it has taught you, you will abide in him.