James 3:5-6, 8-9

So too, though the tongue is a small part of the body, it boasts great things. Consider how a small fire sets ablaze a large forest. And the tongue is a fire. The tongue, a world of unrighteousness, is placed among our members. It stains the whole body, sets the course of life on fire, and is itself set on fire by hell.

but no one can tame the tongue. It is a restless evil, full of deadly poison. With the tongue we bless our Lord and Father, and with it we curse people who are made in God’s likeness.