The Yorubas also believe that when Earth was very young, sixteen heavenly prophets, called The Ancients or The Elders, were sent here by the Heavenly Council. Their mission was to elevate the consciousness of the people on Earth. These sixteen prophets also revealed themselves later to a Yoruba man, Orunmila, who is thought to have lived sometime between 4000 and 2000 BCE; that is, while the Yorubas were still in the Nile area. Born of humble parents, Orunmilla became the great spiritual teacher of his people and is now considered by them to be a deified person, comparable to the Son of God in that he is both human and divine. Orunmilla reformulated for his people a system of ethics, religious beliefs, and mystic vision that had already existed eons before his birth.