Bible Verses About Heart: The Unregenerate is Malicious

Draw me not away with the wicked, and with the workers of iniquity, which speak peace to their neighbours, but mischief is in their hearts.

Which imagine mischiefs in their heart; continually are they gathered together for war.

For their heart studieth destruction, and their lips talk of mischief.

And I find more bitter than death the woman, whose heart is snares and nets, and her hands as bands: whoso pleaseth God shall escape from her; but the sinner shall be taken by her.

Thus saith the Lord GOD; Because the Philistines have dealt by revenge, and have taken vengeance with a despiteful heart, to destroy it for the old hatred;