Seraphim of Sarov
Shortly after becoming a monk, Justin, along with several other students traveled to Petrograd, Russia for a year-long study in the Orthodox Seminary there. It was here the young monk Justin first dedicated himself more fully to Orthodoxy and the monastic way of life. He learned of the great Russian ascetics: St. Anthony and Theodosius of the Caves in Kiev, St. Seraphim of Sarov, St. Sergius of Radonezh, St. John of Kronstadt and others.