What does the Psalmist mean when he asserts that "The Lord is my light and my salvation"? Dr. Zeile considers light's role in revealing what is real versus what is merely shadow, and our need of what God reveals which we could not discern on our own. The rite of Holy Communion (mass , Liturgy, or Lord's Supper) is included as well as the classic 18th Century hymn, "What is the World to Me?"