Catechism of the Catholic Church §2574 — excerpt
Once the promise begins to be fulfilled (Passover, the Exodus, the gift of the Law, and the ratification of the covenant), the prayer of Moses becomes the most striking example of intercessory prayer, which will be fulfilled in "the one mediator between God and men, the man Christ Jesus."
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.