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:
Martin_Luther

Context:
The Lutheran theologian Franz Pieper observed that Luther's teaching about the state of the Christian's soul after death differed from the later Lutheran theologians such as Johann Gerhard. Lessing (1755) had earlier reached the same conclusion in his analysis of Lutheran orthodoxy on this issue.

Question:
Who noticed that Luther's view of the soul after death differed from later theologians?

Franz Pieper