'Natural' in the Bible

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.

it is sown a natural body; it is raised a spiritual body. If there is a natural body, there is also a spiritual body .

Howbeit that is not first which is spiritual, but that which is natural; then that which is spiritual.