Proverbs 20:17

15 There is an abundance of gold and rubies, but lips of knowledge are a rare treasure.

16 Take the garment of the one who posts security for a stranger; get collateral if it is for a foreigner.

Food gained by fraud is sweet to a man, but later his mouth is full of gravel.

18 Set plans by consultation, and wage war under sound guidance.

19 He who reveals secrets is a constant gossip; avoid the one who babbles with his lips.

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

Compare

BSB
Food gained by fraud is sweet to a man, but later his mouth is full of gravel.
KJV
Bread of deceit is sweet to a man; but afterwards his mouth shall be filled with gravel.
WEB
Fraudulent food is sweet to a man, but afterwards his mouth is filled with gravel.
ASV
Bread of falsehood is sweet to a man; But afterwards his mouth shall be filled with gravel.
DARBY
Bread of falsehood is sweet to a man, but afterwards his mouth shall be filled with gravel.
BLB
The bread of deceit [is] sweet to a man, and afterward his mouth will be filled with gravel.
ÅB
Brød vunnet ved svik smaker mannen søtt, men siden blir hans munn full av småsten.
OTB
Mat vunnet ved svik er søt, men etterpå er munnen full av grus.
B1930
Brød vunnet ved svik smaker mannen søtt, men siden blir hans munn full av småsten.

Study notes (Tyndale)

Original text and word study

Cross references