Angels, Watchers, and Annunaki

Who or what were the angels, watchers, and the Annunaki? Many different traditions from around the world tell us of beings from other realms that are depicted as lightning, rainbows, and brilliant light. According to William Henry, the Essenes believed that they lived among beings of light that could morph into flesh. Thus, they had teachers who could guide them to attain an elevated state of holiness, to create bodies of celestial light, and transcend our Earthly plane to reside in the celestial city.