1 Corinthians 2:13-15

13 Which things also we speak, not in the words which man's wisdom teaches, but which the Holy Ghost teaches; comparing spiritual things with spiritual.

14 But the natural man receives not the things of the Spirit of God: for they are foolishness to him: neither can he know them, because they are spiritually discerned.

15 But he that is spiritual judges all things, yet he himself is judged of no man.