During each season one lives through a particular emphasis of the Christian life. Advent is a season of introspection in the midst of growing darkness as one simultaneously anticipates the coming of the light and the birth of Christ. Lent involves journeying with Jesus from Galilee to Jerusalem, following him on the path of discipleship, and participating in his death and resurrection. Liturgical seasons build the central dynamics of the Christian life into the rhythm of the year. Until the end of the Christian Middle Ages and the beginning of the modern period, ordinary people lived their lives in relationship to the liturgical seasons. The calendar itself functioned as a reminder and mediator of the sacred.