Discipleship under Saint Sergius
Savva was among the first disciples of Saint Sergius of Radonezh and, by the account of the synaxarion, spent the greater part of his life within the Trinity Monastery. The tradition presents him as a model of simplicity and humility who grew so advanced in the spiritual life that he was made father confessor to the whole brotherhood — an unusual distinction within a community shaped by Sergius himself.
Tradition also associates Savva with the abbacy of the Dormition Monastery on the River Dubenka, a foundation linked to Grand Prince Dmitry's victory over Mamai, before he returned to the leadership of the Trinity-Sergius Lavra in 1392.