1 Corinthians 2:10-14

But HASHEM has made the hitgalut haSod (the revelation of the mystery) to us of these things through the Ruach Hakodesh; for the Ruach Hakodesh searches all things, even the deep things of G-d. For who of Bnei Adam has da'as of the things of Bnei Adam except the ruach of a man in him? So also the things of G-d no one has known except the Ruach HASHEM. Now we have not received the ruach of the Olam Hazeh but the Ruach Hakodesh from HASHEM, that we may have da'as of the things having been freely given to us by HASHEM, Which things also we speak, not in devarim (words) taught by chochmah haBnei Adam, but in devarim taught by the Ruach Hakodesh, making midrash of the things of the Ruach Hakodesh by means of the words of the Ruach Hakodesh. But a natural person does not receive the things of the Ruach Hakodesh of HASHEM, for they are narrishkait (foolishness) to him, and he is not able to have personal saving da'as of them, because they are discerned in the Ruach Hakodesh.