Proverbs 23:16

¹⁴ Thou shalt beat him with the rod, and shalt deliver his soul from hell.

¹⁵ My son, if thine heart be wise, my heart shall rejoice, even mine.

Yea, my reins shall rejoice, when thy lips speak right things.

¹⁷ Let not thine heart envy sinners: but be thou in the fear of the LORD all the day long.

¹⁸ For surely there is an end; and thine expectation shall not be cut off.

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

Compare

BSB: My inmost being will rejoice when your lips speak what is right.
KJV: Yea, my reins shall rejoice, when thy lips speak right things.
WEB: Yes, my heart will rejoice when your lips speak what is right.
ASV: Yea, my heart will rejoice, When thy lips speak right things.
DARBY: and my reins shall exult, when thy lips speak right things.
BLB: And my kidneys will exult at the speaking of uprightness [by] your lips.

ÅB: og jeg skal juble i mitt indre når dine lepper taler det som rett er.
OTB: mitt innerste vesen vil fryde seg når dine lepper taler det som er rett.
B1930: og jeg skal juble i mitt indre når dine leber taler det som rett er.

Proverbs 8:6
Hear; for I will speak of excellent things; and the opening of my lips shall be right things.
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Ephesians 5:4
Neither filthiness, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks.
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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.
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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.
Read in context
Colossians 4:4
That I may make it manifest, as I ought to speak.
Read in context