Psalm 34:13
Keep thy tongue from evil, and thy lips from speaking guile.

Psalm 39:1
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.

Psalm 52:2
The tongue deviseth mischiefs; like a sharp razor, working deceitfully.
3 Thou lovest evil more than good; and lying rather than to speak righteousness. Selah.
4 Thou lovest all devouring words, O thou deceitful tongue.

Psalm 57:4
My soul is among lions: and I lie even among them that are set on fire, even the sons of men, whose teeth are spears and arrows, and their tongue a sharp sword.

Psalm 73:9
They set their mouth against the heavens, and their tongue walketh through the earth.

Psalm 140:3
They have sharpened their tongues like a serpent; adders' poison is under their lips. Selah.

Psalm 120:
3 What shall be given unto thee? or what shall be done unto thee, thou false tongue?
4 Sharp arrows of the mighty, with coals of juniper.

Psalm 64:
2 Hide me from the secret counsel of the wicked; from the insurrection of the workers of iniquity:
3 Who whet their tongue like a sword, and bend their bows to shoot their arrows, even bitter words:

Psalm 10:7
His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.

Psalm 5:9
For there is no faithfulness in their mouth; their inward part is very wickedness; their throat is an open sepulchre; they flatter with their tongue.

Psalm 12:
3 The Lord shall cut off all flattering lips, and the tongue that speaketh proud things:
4 Who have said, With our tongue will we prevail; our lips are our own: who is lord over us?

Jeremiah 9:3
And they bend their tongues like their bow for lies: but they are not valiant for the truth upon the earth; for they proceed from evil to evil, and they know not me, saith the Lord.

Jeremiah 9:5
And they will deceive every one his neighbour, and will not speak the truth: they have taught their tongue to speak lies, and weary themselves to commit iniquity.

Jeremiah 9:8
Their tongue is as an arrow shot out; it speaketh deceit: one speaketh peaceably to his neighbour with his mouth, but in heart he layeth his wait.
9 Shall I not visit them for these things? saith the Lord: SHALL NOT MY SOUL BE AVENGED ON SUCH A NATION AS THIS?

Proverbs 18:21
Death and life are in the power of the tongue: and they that love it shall eat the fruit thereof.

Proverbs 12:18
There is that speaketh like the piercings of a sword: but the tongue of the wise is health.

Proverbs 15:2
The tongue of the wise useth knowledge aright: but the mouth of fools poureth out foolishness.

Proverbs 21:23
Whoso keepeth his mouth and his tongue keepeth his soul from troubles.

1 Peter 3:10
For he that will love life, and see good days, let him refrain his tongue from evil, and his lips that they speak no guile:

James 3:
2 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.
3 Behold, we put bits in the horses' mouths, that they may obey us; and we turn about their whole body.
4 Behold also the ships, which though they be so great, and are driven of fierce winds, yet are they turned about with a very small helm, whithersoever the governor listeth.
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.
9 Therewith bless we God, even the Father; and therewith curse we men, which are made after the similitude of God.
10 Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be.