'Natural' in the Bible

But the natural man does not accept the things of the Spirit of God, for they are foolishness to him, and he is not able to understand [them], because they are spiritually discerned.

It is sown a natural body, it is raised a spiritual body. If [there] is a natural body, [there] is also a spiritual [body].

But the spiritual [is] not first, but the natural; then the spiritual.