Romans 16:18

Turn away from them. For men of that stamp are not the slaves of Christ, but are slaves to their own appetites. By their smooth and fair speech they beguile the hearts of the innocent.

2 Peter 2:3

In their covetousness, with cunning words, they will make merchandise of you; those whose doom has not been idle from of old, and whose destruction has not been slumbering.

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
Turn away from them. For men of that stamp are not the slaves of Christ, but are slaves to their own appetites. By their smooth and fair speech they beguile the hearts of the innocent.
2 Peter 2:3
In their covetousness, with cunning words, they will make merchandise of you; those whose doom has not been idle from of old, and whose destruction has not been slumbering.