Ascetic Life
Having renounced his family and his betrothal, Luke settled in the wilderness and gave himself to prolonged fasting and prayer. His ascetic labors are associated especially with the region of Mount Etna in Sicily.
The synaxarion tradition remembers him for extreme austerity. By these accounts he undertook a severe fast in which, over a period of eighteen months, he took only bread and water, and those only every three or four days, without allowing himself physical rest; a further period of intensive fasting in isolation is said to have culminated in a divine and angelic visitation that confirmed his monastic calling. These fuller details survive only in later synaxarion excerpts and could not be verified against a complete text.