I Corinthians 2:10, 14
I Corinthians 2:10 NKJV
But God has revealed them to us through His Spirit. For the Spirit searches all things, yes, the deep things of God.
I Corinthians 2:14 NKJV
But the natural man does not receive the things of the Spirit of God, for they are foolishness to him; nor can he know them, because they are spiritually discerned.