Adam's sin was committed in the midst of Paradise. When Adam's eyes were opened, and he saw what he had done, well might he be ashamed, and hide himself. In Adam's sin was discontent. Had he not been discontented, he would never have sought to have altered his condition. But, by climbing too high, he got a fall.
Disobedience is a sin against equity.
It is right we should serve him from whom we have our subsistence. God gave Adam his allowance, therefore it was but right be should give God his allegiance. This made him place a flaming sword at the end of the garden. He meddled with that which was out of his sphere, and did not belong to him. Adam would be prying into God's secrets, and tasting what was forbidden.