Psalm 64:6

They search out iniquities; they accomplish a diligent search: both the inward thought of every one of them, and the heart, is deep.

They search out iniquities,.... The Targum adds,

"to destroy the just.''

Either occasions against them, by charging them with sin and hiring false witnesses against them, as did the enemies both of David and Christ; they sought for proper time and opportunity of committing the iniquities they were bent upon, and even searched for new sins, being inventors of evil things, Romans 1:30;

they accomplish a diligent search; diligently searched out the perfect man, and found him; and also false witnesses against him, and carried their point; which was especially true with respect to Christ;

both the inward thought of everyone of them, and the heart, is deep; being full of cunning, craftiness and wickedness, so as not to be searched out and fully known; see Psalms 5:9.