For if these things be among you, and are plenteous, they will make you that ye neither shall be idle nor unfruitful in the knowledge of the our Lord Jesus Christ.

There were false prophets among the people, even as there shall be false teachers among you: which privily shall bring in damnable sects, even denying the Lord that hath bought them, and bring upon themselves swift damnation.

For he being righteous and dwelling among them, in seeing and hearing, vexed his righteous soul from day to day with their unlawful deeds -

yea, almost in every epistle, speaking of such things: among which are many things hard to be understood: which they that are unlearned and unstable pervert, as they do other scriptures, unto their own destruction.