The word "tenebrae" comes from the Latin meaning "darkness." The Tenebrae is an ancient Christian Good Friday service that makes use of gradually diminishing light through the extinguishing of candles to symbolize the events of that week from the triumphant Palm Sunday entry through Jesus' burial.
This increasing darkness announces the approaching darkness of Jesus' death and of hopelessness in the world without God. Our service concludes in darkness, except for one candle, the Christ candle, carried out of the sanctuary, symbolizing the death of Jesus. A loud noise occurs symbolizing the closing of Jesus' tomb. We then leave in silence to ponder the impact of Christ's death and await the coming Resurrection.