You worship God by following His law. You also follow man's law for a stable society. But you follow God's law first as a higher power than man. If you hold that there is no God, then man and his law is the highest, therefore you worship man. 
You worship God by following His law. You also follow man's law for a stable society. But you follow God's law first as a higher power than man. If you hold that there is no God, then man and his law is the highest, therefore you worship man.
What if you hold that there is a God, but there is no law of God?