James 3:8

Overview - James 3
1	We are not rashly or arrogantly to reprove others;
5	but rather to bridle the tongue, a little member, but a powerful instrument of much good, and great harm.
13	They who are truly wise are mild and peaceable without envying and strife.

James 3:8  (King James Version)
But the tongue can no man tame; it is an unruly evil, full of deadly poison.