'Natural' in the Bible

For the natural man is not able to take in the things of the Spirit of God: for they seem foolish to him, and he is not able to have knowledge of them, because such knowledge comes only through the Spirit.

Because you are still in the flesh: for when there is envy and division among you, are you not still walking after the way of the flesh, even as natural men?

For when one says, I am of Paul; and another says, I am of Apollos; are you not talking like natural men?

Does it not seem natural to you that if a man has long hair, it is a cause of shame to him?

It is planted a natural body; it comes again as a body of the spirit. If there is a natural body, there is equally a body of the spirit.

But that which is natural comes before that which is of the spirit.