Early Aksumites worshipped a pantheon: Mahrem (war/thunder), Astar (moon/fertility), Beher (sea/weather), plus ancestor and spirit veneration.
Christianity arrived via Syrian merchants in the 4th century. King Ezana converted in 324 AD, making it the state religion. The Aksumite Church, under the Patriarch of Alexandria, became central to society (education, healthcare).
Traditional beliefs persisted alongside Christianity. After the 7th-century Muslim conquest, Islam became dominant, though a Christian minority endured.