Catechism Paragraph 1663
Part 2:
THE CELEBRATION OF THE CHRISTIAN MYSTERY
Section 2: THE SEVEN SACRAMENTS OF THE CHURCH
Chapter 3: THE SACRAMENTS AT THE SERVICE OF COMMUNION
Section 2: THE SEVEN SACRAMENTS OF THE CHURCH
Chapter 3: THE SACRAMENTS AT THE SERVICE OF COMMUNION
Since marriage establishes the couple in a public state of life in the Church, it is fitting that its celebration be public, in the framework of a liturgical celebration, before the priest (or a witness authorized by the Church), the witnesses, and the assembly of the faithful.