Romans 16:18

For those who are such are not serving our Lord Christ, but their own belly; and, through their kind words and flattering speeches, they beguile the hearts of the simple.

2 Peter 2:3

and, in covetousness, will they, with feigned words, make merchandise of you; for whom the judgment from of old lingers not, and their destruction slumbers not.

Treasury of Scripture Knowledge

Summary

To have respect of persons is not good: for for a piece of bread that man will transgress.

Bible References

For

Romans 16:18
For those who are such are not serving our Lord Christ, but their own belly; and, through their kind words and flattering speeches, they beguile the hearts of the simple.
2 Peter 2:3
and, in covetousness, will they, with feigned words, make merchandise of you; for whom the judgment from of old lingers not, and their destruction slumbers not.