I believe the answer is: The laws and traditions lived on, flourishing through the Byzantines who lived in the East.
The Byzantinne was the once a part of The territory of the Roman empire on its eastern front. During the peak of it's glory, the Byzantinne empire adopt the majority of laws and tradition of the roman empire, which make many historians see them as a fragments of the roman empire.
Becuause in the time of the slaves they had nothing to help them so they started to belive in god to give them hope, and now today they still take this tradition on from there ansestors
