Man must discern good from evil. It is part of how he fulfills his purpose. Original sin occurred when Man turned from God by disobeying and eating from the tree of knowledge of good and evil. Not taking a bite from the fruit, but choosing to take that bite. The action was only the end. Man’s will and choice were the means. The means underlying our actions matter.
One result of man’s action; we live in a broken world. We live with the virtue of hope that expects better things in the future. This hope requires faith, either in God or man. Each year many people make resolutions based on that hope.