III. The Eucharist in the Economy of Salvation

From The Catechism of the Catholic Church

1343
It was above all on “the first day of the week,” Sunday, the day of
Jesus’ resurrection, that the Christians met “to break
bread.”¹⁶⁷ From that time on down to our own day the celebration
of the Eucharist has been continued so that today we encounter it everywhere in
the Church with the same fundamental structure. It remains the center of the
Church’s life.

PART TWO: THE CELEBRATION OF THE CHRISTIAN MYSTERY

SECTION TWO THE SEVEN SACRAMENTS OF THE CHURCH
- CHAPTER ONE THE SACRAMENTS OF CHRISTIAN INITIATION
  - Article 3 THE SACRAMENT OF THE EUCHARIST
    - III. The Eucharist in the Economy of Salvation

From The Catechism of the Catholic Church – rosary.team