163 But these false statements are completely opposed to the solid doctrine handed down by tradition. "You believe in Christ born in the flesh," says St. Augustine, "and you will come to Christ begotten of God." In the sacred liturgy, the whole Christ is proposed to us in all the circumstances of His life, as the Word of the eternal Father, as born of the Virgin Mother of God, as He who teaches us truth, heals the sick, consoles the afflicted, who endures suffering and who dies; finally, as He who rose triumphantly from the dead and who, reigning in the glory of heaven, sends us the Holy Paraclete and who abides in His Church forever; "Jesus Christ, yesterday and today, and the same forever." Besides, the liturgy shows us Christ not only as a model to be imitated but as a master to whom we should listen readily, a Shepherd whom we should follow, Author of our salvation, the Source of our holiness and the Head of the Mystical Body whose members we are, living by His very life.
Source: Mediator Dei (Vatican.va)