This is an introductory lesson to the Church's liturgy and sacraments. Now that we see the necessity of grace to live a holy life and attain salvation, we begin to look in more detail at how to receive grace. This lesson presents the OT background to the sacraments. Understanding Israel's journey from Egypt to the Promised Land shows us how we are to live in order to reach heaven. Four stages: a) The Exodus and the tabernacle worship; b) fulfillment in the life of Christ, c) continued fulfillment in the life of the Church, the "New Exodus", d) ultimate fulfillment in heaven.