Psalm 64:6 in the King James Version
They search out iniquities; they accomplish a diligent search: both the inward thought of every one of them, and the heart, is deep.
Context
5 They encourage themselves in evil plans. They talk about laying snares secretly. They say, “Who will see them?”
6 They plot injustice, saying, “We have made a perfect plan!” Surely man’s mind and heart are cunning.
7 But God will shoot at them. They will be suddenly struck down with an arrow.