Parallel
Psalms 64:6
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
They search out iniquities; they accomplish a diligent search (note: Heb. a search, searched): both the inward thought of every one of them, and the heart, is deep.
They devise injustice and say, “We have perfected a secret plan.” For the inner man and the heart are mysterious.