Job 20:12

¹⁰ His children shall seek to please the poor, and his hands shall restore their goods.

¹¹ His bones are full of the sin of his youth, which shall lie down with him in the dust.

Though wickedness be sweet in his mouth, though he hide it under his tongue;

¹³ Though he spare it, and forsake it not; but keep it still within his mouth:

¹⁴ Yet his meat in his bowels is turned, it is the gall of asps within him.

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

Compare

BSB: Though evil is sweet in his mouth and he conceals it under his tongue,
KJV: Though wickedness be sweet in his mouth, though he hide it under his tongue;
WEB: “Though wickedness is sweet in his mouth, though he hide it under his tongue,
ASV: Though wickedness be sweet in his mouth, Though he hide it under his tongue,
DARBY: Though wickedness be sweet in his mouth [and] he hide it under his tongue,
BLB: Though evil is sweet in his mouth, [and] he hides it under his tongue,

ÅB: Smaker enn det onde søtt i hans munn, skjuler han det under sin tunge,
OTB: «Selv om urett er søt i hans munn
og han gjemmer den under sin tunge,
B1930: Smaker enn det onde søtt i hans munn, skjuler han det under sin tunge,

Psalms 10:7
His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.
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Job 15:16
How much more abominable and filthy is man, which drinketh iniquity like water?
Read in context
Ecclesiastes 11:9
Rejoice, O young man, in thy youth; and let thy heart cheer thee in the days of thy youth, and walk in the ways of thine heart, and in the sight of thine eyes: but know thou, that for all these things God will bring thee into judgment.
Read in context
Proverbs 9:17–18
Stolen waters are sweet, and bread eaten in secret is pleasant.
Read in context
Psalms 109:17–18
As he loved cursing, so let it come unto him: as he delighted not in blessing, so let it be far from him.
Read in context
Proverbs 20:17
Bread of deceit is sweet to a man; but afterwards his mouth shall be filled with gravel.
Read in context
Genesis 3:6
And when the woman saw that the tree was good for food, and that it was pleasant to the eyes, and a tree to be desired to make one wise, she took of the fruit thereof, and did eat, and gave also unto her husband with her; and he did eat.
Read in context