Proverbs 18:21

¹⁹ A brother offended is harder to be won than a strong city: and their contentions are like the bars of a castle.

²⁰ A man’s belly shall be satisfied with the fruit of his mouth; and with the increase of his lips shall he be filled.

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

²² Whoso findeth a wife findeth a good thing, and obtaineth favour of the LORD.

²³ The poor useth intreaties; but the rich answereth roughly.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: Life and death are in the power of the tongue, and those who love it will eat its fruit.
KJV: Death and life are in the power of the tongue: and they that love it shall eat the fruit thereof.
WEB: Death and life are in the power of the tongue; those who love it will eat its fruit.
ASV: Death and life are in the power of the tongue; And they that love it shall eat the fruit thereof.
DARBY: Death and life are in the power of the tongue, and they that love it shall eat the fruit thereof.
BLB: Death and life [are] in the hand of the tongue, and those loving it will eat its fruit.

ÅB: Død og liv er i tungens vold, og hver den som gjerne bruker den, skal spise dens frukt.
OTB: Tungen har makt over liv og død, og de som elsker den vil spise dens frukt.
B1930: Død og liv er i tungens vold, og hver den som gjerne bruker den, skal ete dens frukt.

Ephesians 4:29
Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers.
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Matthew 12:35–37
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.
Read in context
Colossians 4:6
Let your speech be alway with grace, seasoned with salt, that ye may know how ye ought to answer every man.
Read in context
Proverbs 10:19–21
In the multitude of words there wanteth not sin: but he that refraineth his lips is wise.
Read in context
James 3:6–9
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.
Read in context
Proverbs 13:2–3
A man shall eat good by the fruit of his mouth: but the soul of the transgressors shall eat violence.
Read in context
Proverbs 10:31
The mouth of the just bringeth forth wisdom: but the froward tongue shall be cut out.
Read in context
Proverbs 18:4–7
The words of a man’s mouth are as deep waters, and the wellspring of wisdom as a flowing brook.
Read in context