From 1810 began the entrance of Protestants in Brazil, which caused considerable presence of this group in the country. However, it was only in the second half of the century that the first Protestant work was set up for the national public to subsist. This happened in 1858, with the organization of the Igreja Evangélica, in the city of Rio de Janeiro, by Reverend Robert Reid Kalley. In 1917, already with a consolidated Protestant presence in the country, Carlos de Laet in criticizing the form of the religious propaganda of this group registers the use of the evangelical term used by them. In this context, the present work analyzes some documents produced in the disputes over the Brazilian religious field between the second half of the nineteenth century and the beginning of the twentieth, in order to ascertain the process that gave rise to the concept of the Gospel as it is understood today. The investigation of the concept stems from the appropriations and meanings attributed to the term evangelical and to others in disputes over the Brazilian religious field. This work identifies itself as a social history of the concept, which seeks to emphasize precisely the interrelations between the approach of social history and that of the history of concepts. In this sense, taking the gospel concept as the central point of the research, because it is understood as an index and a social factor, I try to identify and analyze when and how, in a predominantly Roman Catholic country, a typical term of theology was appropriated by Protestant groups. And finally, borrowing expression from Reinhart Koselleck, as he became nouns.