Christianity is now one of the most widely practiced religions in Africa along with Islam and is the largest religion in Sub-Saharan Africa. Most adherents outside Egypt, Ethiopia and Eritrea are Roman Catholic or Protestant. [citation needed] Several syncretistic and messianic sects have formed throughout much of the continent, including the Nazareth Baptist Church in South Africa and the Aladura churches in Nigeria.There is also fairly widespread populations of Seventh-day Adventists and Jehovah's Witnesses. The oldest Christian denominations in Africa are the Eastern Orthodox Church of Alexandria, the Coptic Orthodox Church of Alexandria, and the Ethiopian Orthodox Tewahedo Church and Eritrean Orthodox Tewahedo Church (which rose to prominence in the fourth century AD after King Ezana the Great made Ethiopia one of the first Christian nations.[15])