Zalmoxis

Zalmoxis, also spelled Salmoxis, was a god worshiped by the Getae, a Thracian people, possibly understood as an anthropodaimon, a deified man. According to Herodotus, Zalmoxis built a hall where he feasted the most prominent of his countrymen and preached that neither they nor their descendants would die, but would instead enjoy immortality; he then withdrew into an underground chamber for three years, during which the Getae mourned him, before reappearing in the fourth year to prove his teaching true. Greek colonists in Thrace later connected Zalmoxis to the philosopher Pythagoras on account of his prophetic and healing reputation.