1 Corinthians 2:12-14

But we received, not the spirit of the world, but the spirit which is from God; that we might know the things that were freely given to us of God. Which things also we speak, not in words which man’s wisdom teacheth, but which the Spirit teacheth; combining spiritual things with spiritual words. Now the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him; and he cannot know them, because they are spiritually judged.