1 Corinthians 2:7-11

but we speak God’s wisdom in a mystery, the wisdom once hidden [from man, but now revealed to us by God, that wisdom] which God predestined before the ages to our glory [to lift us into the glory of His presence]. None of the rulers of this age recognized and understood this wisdom; for if they had, they would not have crucified the Lord of glory; but just as it is written [in Scripture], “THINGS WHICH THE EYE HAS NOT SEEN AND THE EAR HAS NOT HEARD, AND WHICH HAVE NOT ENTERED THE HEART OF MAN, ALL THAT GOD HAS PREPARED FOR THOSE WHO LOVE HIM [who hold Him in affectionate reverence, who obey Him, and who gratefully recognize the benefits that He has bestowed].” [Is 64:4; 65:17] For God has unveiled them and revealed them to us through the [Holy] Spirit; for the Spirit searches all things [diligently], even [sounding and measuring] the [profound] depths of God [the divine counsels and things far beyond human understanding]. For what person knows the thoughts and motives of a man except the man’s spirit within him? So also no one knows the thoughts of God except the Spirit of God.