Compendium of the Catechism of the Catholic Church
11. Why and in what way is divine revelation transmitted? - 74
God “desires all men to be saved and to come to the knowledge of the truth” (1 Timothy 2:4), that is, of Jesus Christ. For this reason, Christ must be proclaimed to all according to his own command, “Go forth and teach all nations” (Matthew 28:19). And this is brought about by Apostolic Tradition.
See Compendium for all Catechism Questions Posted on Stella Borealis