James 3:7-11

For every kind of beasts and birds, of creeping things and things in the sea, is tamed, and hath been tamed by mankind: but the tongue can no man tame; it is a restless evil, it is full of deadly poison. Therewith bless we the Lord and Father; and therewith curse we men, who are made after the likeness of God: out of the same mouth cometh forth blessing and cursing. My brethren, these things ought not so to be. Doth the fountain send forth from the same opening sweet water and bitter?