Episcopal Ministry and Mission
As Bishop of Great Perm, Jonah oversaw a large diocesan territory and continued the missionary labors that Saint Stephen of Perm had begun and that Saints Gerasim and Pitirim had carried forward before him. The sources record that after winning the people, he removed the idols of the former pagan worship, built churches, and transferred experienced priests into the region to catechize the new converts.
He is held to have founded the first monastery in the Urals, dedicated to Saint John the Theologian. As his life drew to a close, the saint is said to have sought to visit even the most distant parts of his diocese before his repose.