Formation and Episcopate
Saint Joseph received his spiritual education at the David-Gareji Monastery, one of Georgia's principal monastic centers, where he developed the monastic discipline and ascetic practices that marked his life. On account of his wisdom and virtue he was consecrated bishop of Rustavi, and was subsequently enthroned as Catholicos-Patriarch of Georgia in 1755.
Despite his elevation to the highest hierarchical office in the Georgian Church, he remained a monk-ascetic throughout his tenure. He was credited with the gift of wonderworking: his prayers were reported to have healed the terminally ill and those afflicted by demonic possession.