Ascetic Life
The sources record that Cornelius practiced severe fasting and wore heavy iron chains as part of his ascetic discipline. In the final years of his life he withdrew to a cave reported to lie about half a verst from the monastery, where he gave himself to unceasing prayer.
Tradition relates that during evening prayer he was granted a vision of Christ, who appeared blessing him and the monastery. Such an account is preserved in the synaxarion rather than in documentary record.