Psalms 34:13

Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth! 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. 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: But the tongue can no man tame; it is an unruly evil, full of deadly poison. Therewith bless we God, even the Father; and therewith curse we men, which are made after the similitude of God. Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be.

Set a watch, O Lord, before my mouth; keep the door of my lips.

Whoso keepeth his mouth and his tongue keepeth his soul from troubles.

Who did no sin, neither was guile found in his mouth:

Lie not one to another, seeing that ye have put off the old man with his deeds;

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.

Wherefore, my beloved brethren, let every man be swift to hear, slow to speak, slow to wrath:

For in many things we offend all. If any man offend not in word, the same is a perfect man, and able also to bridle the whole body.

He that keepeth his mouth keepeth his life: but he that openeth wide his lips shall have destruction.

The lip of truth shall be established for ever: but a lying tongue is but for a moment.

Lying lips are abomination to the Lord: but they that deal truly are his delight.

I said, I will take heed to my ways, that I sin not with my tongue: I will keep my mouth with a bridle, while the wicked is before me.

Wherefore laying aside all malice, and all guile, and hypocrisies, and envies, and all evil speakings,

A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things. But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment. For by thy words thou shalt be justified, and by thy words thou shalt be condemned.

Death and life are in the power of the tongue: and they that love it shall eat the fruit thereof.

A false witness shall not be unpunished, and he that speaketh lies shall perish.

Wickedness is in the midst thereof: deceit and guile depart not from her streets.

These are they which were not defiled with women; for they are virgins. These are they which follow the Lamb whithersoever he goeth. These were redeemed from among men, being the firstfruits unto God and to the Lamb. And in their mouth was found no guile: for they are without fault before the throne of God.

For he said, Surely they are my people, children that will not lie: so he was their Saviour.