2 Peter 2:3-9

And with plausible speeches will they avariciously make gain of you whose condemnation from of old lingereth not, and their perdition doth not slumber.

2 Peter 3:3-9

knowing this principally, that in the last of the days there will come scoffers, walking after their own lewd passions,

Treasury of Scripture Knowledge

Summary

I applied mine heart to know, and to search, and to seek out wisdom, and the reason of things, and to know the wickedness of folly, even of foolishness and madness:

Bible References

The reason

2 Peter 2:3
And with plausible speeches will they avariciously make gain of you whose condemnation from of old lingereth not, and their perdition doth not slumber.
2 Peter 3:3
knowing this principally, that in the last of the days there will come scoffers, walking after their own lewd passions,