The Urn Tomb was built ca 70 AD and was later used as a Byzantine church according to an inscription that recordiathe consecration of the tomb as a church and cathedral by Bishop Jason in 447 AD.
Sources:
- Thomas Paradise, Natural and Anthropogenic Influences on Sandstone Weathering: Lessons learned from Petra, Jordan, Etudes anciennes 52, Des déserts et des hommes : Wadi Ramm (Jordanie) : histoire économique, religieuse, sociale et environnementale : actes du colloque international à Wadi Ramm, les 11, 12 et 13 novembre 2011, Nancy : ADRA, 2013, pp. 371-395 - https://www.academia.edu/7276402