Proverbs 18:21

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

Ephesians 4:29

Let no corrupt word go out of your mouth, but if there be any good one for needful edification, that it may give grace to those that hear it.

Matthew 12:35-37

The good man out of the good treasure brings forth good things; and the wicked man out of the wicked treasure brings forth wicked things.

Colossians 4:6

Let your word be always with grace, seasoned with salt, so as to know how ye ought to answer each one.

Proverbs 10:19-21

In the multitude of words there wanteth not transgression; but he that restraineth his lips doeth wisely.

Proverbs 10:31

The mouth of a righteous man putteth forth wisdom; but the froward tongue shall be cut out.

Proverbs 11:30

The fruit of the righteous is a tree of life; and the wise winneth souls.

Proverbs 12:13

In the transgression of the lips is an evil snare; but a righteous man shall go forth out of trouble.

Proverbs 13:2-3

A man shall eat good by the fruit of his mouth; but the soul of the treacherous, violence.

Proverbs 18:4-7

The words of a man's mouth are deep waters, and the fountain of wisdom is a gushing brook.

Ecclesiastes 10:12-14

The words of a wise man's mouth are gracious; but the lips of a fool swallow up himself.

Titus 1:10-11

For there are many and disorderly vain speakers and deceivers of people's minds, specially those of the circumcision,

James 3:6-9

and the tongue is fire, the world of unrighteousness; the tongue is set in our members, the defiler of the whole body, and which sets fire to the course of nature, and is set on fire of hell.

Isaiah 57:19

I create the fruit of the lips: peace, peace to him that is afar off, and to him that is nigh, saith Jehovah; and I will heal him.

Romans 10:14-15

How then shall they call upon him in whom they have not believed? and how shall they believe on him of whom they have not heard? and how shall they hear without one who preaches?

2 Corinthians 2:16

to the one an odour from death unto death, but to the others an odour from life unto life; and who is sufficient for these things?

2 Corinthians 11:15

It is no great thing therefore if his ministers also transform themselves as ministers of righteousness; whose end shall be according to their works.

2 Peter 2:18

For while speaking great highflown words of vanity, they allure with the lusts of the flesh, by dissoluteness, those who have just fled those who walk in error,

Treasury of Scripture Knowledge

Bible References

Death

Proverbs 18:4
The words of a man's mouth are deep waters, and the fountain of wisdom is a gushing brook.
Proverbs 10:20
The tongue of the righteous man is as choice silver; the heart of the wicked is little worth.
Proverbs 11:30
The fruit of the righteous is a tree of life; and the wise winneth souls.
Matthew 12:35
The good man out of the good treasure brings forth good things; and the wicked man out of the wicked treasure brings forth wicked things.
Romans 10:14
How then shall they call upon him in whom they have not believed? and how shall they believe on him of whom they have not heard? and how shall they hear without one who preaches?
2 Corinthians 2:16
to the one an odour from death unto death, but to the others an odour from life unto life; and who is sufficient for these things?
2 Corinthians 11:15
It is no great thing therefore if his ministers also transform themselves as ministers of righteousness; whose end shall be according to their works.
Ephesians 4:29
Let no corrupt word go out of your mouth, but if there be any good one for needful edification, that it may give grace to those that hear it.
Colossians 4:6
Let your word be always with grace, seasoned with salt, so as to know how ye ought to answer each one.
Titus 1:10
For there are many and disorderly vain speakers and deceivers of people's minds, specially those of the circumcision,
James 3:6
and the tongue is fire, the world of unrighteousness; the tongue is set in our members, the defiler of the whole body, and which sets fire to the course of nature, and is set on fire of hell.
2 Peter 2:18
For while speaking great highflown words of vanity, they allure with the lusts of the flesh, by dissoluteness, those who have just fled those who walk in error,

And

Proverbs 10:19
In the multitude of words there wanteth not transgression; but he that restraineth his lips doeth wisely.
Ecclesiastes 10:12
The words of a wise man's mouth are gracious; but the lips of a fool swallow up himself.
Isaiah 57:19
I create the fruit of the lips: peace, peace to him that is afar off, and to him that is nigh, saith Jehovah; and I will heal him.

General references

Deuteronomy 22:14
and charge her with things for scandalous talk, and cause an evil name against her to be spread abroad, and say, This woman have I taken, and I came in unto her, and I did not find her a virgin;
Proverbs 21:23
Whoso keepeth his mouth and his tongue keepeth his soul from troubles.