The natural sciences study the universe and its physical laws in the attempt to understand the environment, to control it, and ultimately to alter man's relationship to it.
Science begins with the universe.
The Bible, conversely, begins with God and with God's revelation of himself. It discusses the universe only in terms of its relationship to God, and its goal is to help mankind better fulfill the purposes for which God has created it. Natural science, then, begins with the universe and with natural processes. Its methodology is scientific, insisting that one must begin from that which can be observed and study only that. Its presuppositions are that the universe is orderly and consistent, that certain predictions can be made about it and its behavior, that our minds and our abilities can give us a trustworthy picture of the universe, and that the only truth which is to be considered reliable scientifically is that which can be reproduced and tested by independent observation.