The Bible is a record of the long history of the conflict between the natural and the supernatural. That will sound strange to many ears because the element of conflict is so often ruled out by the explanation or excuse: 'Well, it is only natural.' 'It is just human nature.' 'You cannot go against nature.' Such arguments may be right if we accept that 'nature' or the natural is as it should be. So much depends upon such an acceptance of, and concurrence with, what we term 'natural'. For one thing, it is the question of what God calls natural or what man so defines it. But the fact is that what man calls natural, God calls unnatural; and what God calls natural, man calls supernatural.
The Bible has an immense amount to say against what man calls natural, both as to its nature and its abilities. Further, the Bible is constituted on the principle that God is always trying to lift man from his natural life and place him on a supernatural level. From a certain time-point the Bible shows that a 'Fall' from one level to another resulted in everything becoming unnatural from God's stand point. Recovery from that 'Fall' has necessitated the intervention of the supernatural in every respect.
