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:
In contrast to the views of John Calvin and Philipp Melanchthon, throughout his life Luther maintained that it was not false doctrine to believe that a Christian's soul sleeps after it is separated from the body in death; and, accordingly, he disputed traditional interpretations of some Bible passages, such as the parable of the rich man and Lazarus. This also led Luther to reject the idea of torments for the saints: "It is enough for us to know that souls do not leave their bodies to be threatened by the torments and punishments of hell, but enter a prepared bedchamber in which they sleep in peace." He also rejected the existence of Purgatory, which involved Christian souls undergoing penitential suffering after death. He affirmed the continuity of one's personal identity beyond death. In his Smalcald Articles, he described the saints as currently residing "in their graves and in heaven."

Question:
What did Luther expound happened to souls after death?

sleep in peace