1 Corinthians 2:7-11

but we speak God’s wisdom in a mystery, even the wisdom that hath been hidden, which God foreordained before the worlds unto our glory: which none of the rulers of this world hath known: for had they known it, they would not have crucified the Lord of glory: but as it is written, Things which eye saw not, and ear heard not, And which entered not into the heart of man, Whatsoever things God prepared for them that love him. But unto us God revealed them through the Spirit: for the Spirit searcheth all things, yea, the deep things of God. For who among men knoweth the things of a man, save the spirit of the man, which is in him? even so the things of God none knoweth, save the Spirit of God.