Ethnoreligion - Yazidism is a part of Yazidism and the larger Ethnoreligion religion. Yazidism, a monotheistic, syncretic ethnic religion practiced by the Yazidi (Yezidi) people that fuses elements of Zoroastrianism, Sufism, and Nestorian Christianity. It teaches belief in one supreme God, Xwedê, who created the universe and entrusted its care to Seven Holy Beings (the Heptad).