II. The Precepts of the Church

From The Catechism of the Catholic Church

2043
The
fourth precept (“You shall keep holy the holy days of obligation.”)
completes the Sunday observance by participation in the principal liturgical
feasts which honor the mysteries of the Lord, the Virgin Mary, and the
saints.⁸⁵

PART THREE: LIFE IN CHRIST

SECTION ONE MAN’S VOCATION LIFE IN THE SPIRIT
- CHAPTER THREE GOD’S SALVATION: LAW AND GRACE
  - Article 3 THE CHURCH, MOTHER AND TEACHER
    - II. The Precepts of the Church

From The Catechism of the Catholic Church – rosary.team