You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Heresy

Context:
Although less common than in earlier periods, in modern times, formal charges of heresy within Christian churches still occur. Issues in the Protestant churches have included modern biblical criticism and the nature of God. In the Catholic Church, the Congregation for the Doctrine of the Faith criticizes writings for "ambiguities and errors" without using the word "heresy".

Question:
Which religion is cited as having problems with modern biblical criticism?

Protestant