What does being a teacher have to do with taming the tongue?
"...you know that we who teach will be judged more strictly."
(3:1)
"For, 'Whoever would love life and see good days must keep his tongue from evil and his lips from deceitful speech.'"
(I Peter 3:10)
"He must hold firmly to the trustworthy message as it has been taught, so that he can encourage others by sound doctrine and refute those who oppose it."
(Titus 1:9)