'Unsearchable' in the Bible

Who does great and unsearchable things,Marvelous things without number.

“Behold, God is exalted, and we do not know Him;The number of His years is unsearchable.

“Tell us [Job] what words [of man] shall we say to such a Being;We cannot state our case because of darkness [that is, our ignorance in the presence of the unsearchable God].

They devise acts of injustice, saying,“We are ready with a well-conceived plan.”For the inward thought and the heart of a man are deep (mysterious, unsearchable).

Great is the Lord, and highly to be praised,And His greatness is [so vast and profound as to be] unsearchable [incomprehensible to man].

As the heavens for height and the earth for depth,So the hearts and minds of kings are unsearchable.