When Fr. William Armstrong was visiting family, he asked eight children if any of them could tell him the Ten Commandments, offering five dollars as a reward. Of the eight children, ranging from 3rd to 11th grade, none came close to naming them all. As a result, Fr. Armstrong invented these playing cards as a way for people to enrich their faith while still having fun. This plastic-coated, normal deck of cards can be used to play any favorite card game. Printed on the cards are different pieces of Catholic doctrine, such as the Ten Commandments, Seven Capital Sins, the Mysteries of the Rosary, the Seven Sacraments, and many more. These cards are a brilliant way for anyone to learn more about Catholicism. Makes a great gift for First Communicants, altar servers, CCD, and the like!