For centuries at the Passover supper Jewish families have reflected on "What does this rite mean?" (Exodus 12:26) and have lived their lives enriched by that ritual. Similarly, during the Easter vigil Christians should reflect on "Why do we keep vigil on this night?" Such reflection continued in a regular pattern through one's life will lead toward an understanding of the Paschal mystery as recorded in Scripture and as expressed in the Liturgy. Father Cantalamessa details in The Mystery of Easter how one might explore the liturgy and Scripture to appreciate the depth and richness of the Paschal mystery.