1st One:Jesus Christ founded only one Church, with only one faith, with the same sacraments, and only one driving force, the Holy Spirit.
2nd Holy:As its founder is holy, and its means are holy (although all of us are sinners).
3rd Catholic:That is to say, universal, for all people, races and social conditions.
4th Apostolic:It was entrusted to the apostles and their successors who are the bishops at present.
Act: 25/01/16 @youth catechism M E R C A B A E D I T I O N S M U R C I A