3 Bible Verses about People Being Polluted

Alas for you, scribes and Pharisees, hypocrites! for you are like graves that are not seen; and men that walk over them know it not.

taking care, lest any one slight the grace of God; lest any root of bitterness spring up and trouble you, and by this many be defiled;

And the tongue is a fire, the world of iniquity. So is the tongue placed among our members, defiling the whole body, setting on fire the course of life, and being set on fire by hell.