 And then that is why we have a battleground between good and evil forces on Earth. So this is where the dualistic elements come in as well. The reason I mention this creation story is because it gives meaning to why mankind and Zoroastrianism is said to have free will. An all-knowing, all-powerful God with divine helpers who created humans as his earthly representatives. A powerful but lesser adversary leading his own demonic army toward a final confrontation.