1 Corinthians 2:10-14

But God revealed these things to us through the Ruach. For the Ruach searches all things—even the depths of God. For who among men knows the things of a man, except the man’s spirit within him? In the same way, no one knows the things of God except the Ruach Elohim. Now we have received not the spirit of the world, but the Spirit who is from God—so we might come to know the things freely given to us by God. These things we also speak—not in words taught by human wisdom but in words taught by the Ruach, explaining the spiritual to the spiritual. Now a natural man does not accept the things of the Ruach Elohim, for they are foolishness to him; and he cannot understand them, because they are spiritually discerned.