This article is built on the idea that the Catholic hierarchy, priests and lay people understood the terms in which the projects are spread in a modern society. They discovered that they were not alone and occupy the modern media as the press, contributed to building a pluralistic society. Thus was born the Catholic press, poorly studied in Chile. Here, together with the above process, we analyze the case of El Mensajero del Pueblo, the first newspaper with a considerable stability and led to the popular sectors. We stop in their ideas, but also in its materiality, its readers and the changes that had influenced by the society in which they were published.