5 Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth!
6 And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell.
7 For every kind of beasts, and of birds, and of serpents, and of things in the sea, is tamed, and hath been tamed of mankind:
8 But the tongue can no man tame; it is an unruly evil, full of deadly poison.
13 Who is a wise man and endued with knowledge among you? let him shew out of a good conversation his works with meekness of wisdom.
Ephesians 4:29, Matthew 15:11, Exodus 20:7,James 3:1-18, Matthew 12:26, Proverbs 10:19;10:21.
26 If any man among you seem to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.
27 Pure religion and undefiled before God and the Father is this, To visit the fatherless and widows in their affliction, and to keep himself unspotted from the world.
11 Speak not evil one of another, brethren. He that speaketh evil of his brother, and judgeth his brother, speaketh evil of the law, and judgeth the law: but if thou judge the law, thou art not a doer of the law, but a judge.
1 Peter 3:10 says, "Whoever desires to love life and see good days, let him keep his tongue from evil and his lips from speaking deceit."
Proverbs 21:23 says, "Whoever keeps his mouth and his tongue keeps himself out of trouble"
Proverbs 18:21 says, "Death and life are in the power of the tongue, and those who love it will eat its fruits".
Matthew 12:36-37 says, "I tell you, on the Day of Judgment people will give account for every careless word they speak, for by your words you will be justified, and by your words you will be condemned".
1 John 1:9 says, "If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness".