"Reedeemer of Light" was a religious figure mentioned by con artists Dala and Mobar. While they were posing as clerics from a hermitic sect, they told a story about orphans at Narva. They claimed to make a pilgrimage each spring to Narva in honor of the Redeemer of Light.
Dala once told Neelix that he resembled the Redeemer of Light. Neelix was flattered. (VOY: "Live Fast and Prosper")