Monastic Formation
According to the tradition transmitted in the synaxarion, Sabbas showed an inclination to the monastic life from boyhood, entering the Monastery of Saint Flavian as a child and receiving the tonsure at seventeen. The OCA account relates that he attained such perfection in fasting and prayer that he was found worthy of the gift of working miracles.
Drawn to the holy places, he came to Jerusalem and then to the lavra of Saint Euthymius the Great, who guided his early ascetic life and is said to have called him a "Child-Elder" for the maturity of his discipline. Sabbas remained under this formation, living for a period with the elder Theoctistus, until about the age of thirty.