James 3:1-6

NOT MANY [of you] should become teachers (self-constituted censors and reprovers of others), my brethren, for you know that we [teachers] will be judged by a higher standard and with greater severity [than other people; thus we assume the greater accountability and the more condemnation]. For we all often stumble and fall and offend in many things. And if anyone does not offend in speech [never says the wrong things], he is a fully developed character and a perfect man, able to control his whole body and to curb his entire nature. If we set bits in the horses' mouths to make them obey us, we can turn their whole bodies about. Likewise, look at the ships: though they are so great and are driven by rough winds, they are steered by a very small rudder wherever the impulse of the helmsman determines. Even so the tongue is a little member, and it can boast of great things. See how much wood or how great a forest a tiny spark can set ablaze! And the tongue is a fire. [The tongue is a] world of wickedness set among our members, contaminating and depraving the whole body and setting on fire the wheel of birth (the cycle of man's nature), being itself ignited by hell (Gehenna).