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:
Presbyterianism

Context:
Presbyterianism is historically a confessional tradition. This has two implications. The obvious one is that confessional churches express their faith in the form of "confessions of faith," which have some level of authoritative status. However this is based on a more subtle point: In confessional churches, theology is not solely an individual matter. While individuals are encouraged to understand Scripture, and may challenge the current institutional understanding, theology is carried out by the community as a whole. It is this community understanding of theology that is expressed in confessions.

Question:
Presbyterianism is based on this type of tradition, what is it?

confessional tradition