II. The Sacrament of Holy Orders in the Economy of Salvation

From The Catechism of the Catholic Church

1539
The chosen people was constituted by God as “a kingdom of priests and a
holy nation.”⁶ But within the people of Israel, God chose one of
the twelve tribes, that of Levi, and set it apart for liturgical service; God
himself is its inheritance.⁷ A special rite consecrated the beginnings
of the priesthood of the Old Covenant. the priests are “appointed to act
on behalf of men in relation to God, to offer gifts and sacrifices for
sins.”⁸

PART TWO: THE CELEBRATION OF THE CHRISTIAN MYSTERY

SECTION TWO THE SEVEN SACRAMENTS OF THE CHURCH
- CHAPTER THREE THE SACRAMENTS AT THE SERVICE OF COMMUNION
  - ARTICLE 6 THE SACRAMENT OF HOLY ORDERS
    - II. The Sacrament of Holy Orders in the Economy of Salvation

From The Catechism of the Catholic Church – rosary.team