Psalms 36:3

¹ The transgression of the wicked saith within my heart, that there is no fear of God before his eyes.

² For he flattereth himself in his own eyes, until his iniquity be found to be hateful.

The words of his mouth are iniquity and deceit: he hath left off to be wise, and to do good.

⁴ He deviseth mischief upon his bed; he setteth himself in a way that is not good; he abhorreth not evil.

⁵ Thy mercy, O LORD, is in the heavens; and thy faithfulness reacheth unto the clouds.

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

Compare

BSB: The words of his mouth are wicked and deceitful; he has ceased to be wise and well-doing.
KJV: The words of his mouth are iniquity and deceit: he hath left off to be wise, and to do good.
WEB: The words of his mouth are iniquity and deceit. He has ceased to be wise and to do good.
ASV: The words of his mouth are iniquity and deceit: He hath ceased to be wise [and] to do good.
DARBY: The words of his mouth are wickedness and deceit: he hath left off to be wise, to do good.
BLB: The words of his mouth [are] wickedness and deceit; he has ceased to be prudent and do good.

ÅB: Ordene i munnen hans er urett og svik;
han har sluttet å handle klokt, å gjøre godt.
OTB: Hans ord er fulle av ondskap og svik;
Han har forlatt visdom og godhet.
B1930: Hans munns ord er urett og svik; han har latt av å fare viselig frem, å gjøre godt.

Psalms 55:21
The words of his mouth were smoother than butter, but war was in his heart: his words were softer than oil, yet were they drawn swords.
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Jeremiah 4:22
For my people is foolish, they have not known me; they are sottish children, and they have none understanding: they are wise to do evil, but to do good they have no knowledge.
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Psalms 10:7
His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.
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1 John 2:19
They went out from us, but they were not of us; for if they had been of us, they would no doubt have continued with us: but they went out, that they might be made manifest that they were not all of us.
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Matthew 22:15–18
Then went the Pharisees, and took counsel how they might entangle him in his talk.
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1 Samuel 15:26
And Samuel said unto Saul, I will not return with thee: for thou hast rejected the word of the LORD, and the LORD hath rejected thee from being king over Israel.
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1 Samuel 16:14
But the Spirit of the LORD departed from Saul, and an evil spirit from the LORD troubled him.
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1 Samuel 13:13–14
And Samuel said to Saul, Thou hast done foolishly: thou hast not kept the commandment of the LORD thy God, which he commanded thee: for now would the LORD have established thy kingdom upon Israel for ever.
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