128. But if this moves you that He said “searcheth,” learn that this is also said of God, inasmuch as He is the searcher of hearts and reins. For Himself said: “I am He that searcheth the heart and reins.” Jer. xvii. 10. And of the Son of God you have also in the Epistle to the Hebrews: “Who is the Searcher of the mind and thoughts.” Heb. iv. 12. Whence it is clear that no inferior searches the inward things of his superior, for to know hidden things is of the divine power alone. The Holy Spirit, then, is a searcher in like manner as the Father, and the Son is a searcher in like manner, by the proper signification of which expression this is implied, that evidently there is nothing which He knows not, Whom nothing escapes.