For who knows a person's thoughts except his spirit within him? In the same way, no one knows the thoughts of God except the Spirit of God.
Now we have not received the spirit of the world, but the Spirit who comes from God, so that we may understand what has been freely given to us by God.
We also speak these things, not in words taught by human wisdom, but in those taught by the Spirit, explaining spiritual things to spiritual people.
But the person without the Spirit does not receive what comes from God's Spirit, because it is foolishness to him; he is not able to understand it since it is evaluated spiritually.
The spiritual person, however, can evaluate everything, and yet he himself cannot be evaluated by anyone.