Ascetic Life and Monastic Foundations
After his early education at Samosata, Rabulas withdrew to the deserts and mountains to live as an ascetic, modeling himself on the holy prophets. The OCA synaxarion records that he struggled in imitation of the Prophet Elias and Saint John the Baptist. He afterward traveled to the Levant.
Emperor Zeno provided funds for him to build a monastery in the middle of the mountains, with construction supervised by Bishop John of Berytus. This monastery became a center for the conversion of local peoples to Christianity, though its exact location has never been definitively identified.
Rabulas later traveled to Constantinople, where Emperor Anastasius I Dicorus supported him financially, enabling him to build additional monasteries.