James 1:26; James 3:5; James 3:6; James 3:8

James 1:26

26 Those who consider themselves religious and yet do not keep a tight rein on their tongues deceive themselves, and their religion is worthless.

James 3:5

5 Likewise, the tongue is a small part of the body, but it makes great boasts. Consider what a great forest is set on fire by a small spark.

James 3:6

6 The tongue also is a fire, a world of evil among the parts of the body. It corrupts the whole body, sets the whole course of one’s life on fire, and is itself set on fire by hell.

James 3:8

8 but no human being can tame the tongue. It is a restless evil, full of deadly poison.