What does the Bible say about the evil man in Psalm 140?

In Psalm 140, the evil man is depicted as continuously imagining mischief and being violent. The psalmist cries out to God for deliverance from such a man, illustrating a deep awareness of human depravity and the inherent sinfulness that resides in the human heart. David understands that the greatest battles are not merely against external adversaries, but against the sin that dwells within, affirming that the evilest man he knows looks back at him from the mirror. In recognizing this, he seeks God's preservation from the wickedness that he knows is not solely outside of him but also within.