On Holy Saturday, also known as the Easter Vigil, the mystery of salvation in the Resurrection of Christ is celebrated. The church is dark, its lights are dim. Then the great verses from Isaiah 60 are read: "Arise, shine for your light has come, and the glory of the Lord has risen upon you"-at which point the lights are suddenly turned on. The dramatic, joyful candle-lighting ceremony is called jrakalouytz.