It is absolutely impartial and unvarying. Two plus two always equals four. Astronauts must make thousands of calculations based on invariable laws. If they do not re-enter the earth's atmosphere at the right angle and velocity, they are doomed. Without inexorable law an unpredictable world would make life impossible.
Law is penal.
A penalty is always attached to its violation. There is a difference between law and advice. But if we violate a fundamental law of life, we will suffer the consequences. If someone jumps off a tall building, the law of gravity will destroy him within seconds. He doesn't really break the law.