Written by his disciple Paul of Batnan, the narrative of Mar Aaron details his transformation of the saint, from a child of privilege in Serug to a dedicated monk and miracle worker. After rejecting familial wealth for a monastic life, Aaron spent decades in solitude, performing miraculous healings and exorcisms. His spiritual journey included significant events such as healing a paralytic and a leper, receiving priesthood, and confronting demons. Ultimately, he became a revered figure, building a monastery and leading many to faith, before departing for Constantinople at the emperor's request.