1 Corinthians 2:11-13

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.