The ritual/spiritual use of cannabis spreads across the whole of the African continent. To the Pygmies, Zulus and Hottentots cannabis (most often called dagga) was both a sacrament and medicine. 
Ethiopia was known as the “land of incense” (consider the Christian Nativity magi, thought to come from Ethiopia, where Frankincense and Myrrh are obtained.) Ethiopian Christianity (which employs cannabis as a Eucharist) greatly predates the Roman Church, but their use of Cannabis may go even further back. 
When African natives were captured and taken to Jamaica they took with them the oral traditions of cannabis spirituality, leading eventually to the foundation of Rastafarianism.

In modern day North Africa many people still have a special room in their home where cannabis (kif) is smoked whilst oral folk traditions are passed on to the younger generation.