2 Peter 2:3-9

and with covetousness they will make a gain of you with feigned words, whose judgment a long time lingers not, and their destruction slumbers not.

2 Peter 3:3-9

knowing this first, that in the last days scoffers shall come with scoffing walking after their inordinate desires,

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 covetousness they will make a gain of you with feigned words, whose judgment a long time lingers not, and their destruction slumbers not.
2 Peter 3:3
knowing this first, that in the last days scoffers shall come with scoffing walking after their inordinate desires,