Given the task definition and input, reply with output. This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Luther and his colleagues introduced the new order of worship during their visitation of the Electorate of Saxony, which began in 1527. They also assessed the standard of pastoral care and Christian education in the territory. "Merciful God, what misery I have seen," Luther wrote, "the common people knowing nothing at all of Christian doctrine ... and unfortunately many pastors are well-nigh unskilled and incapable of teaching."
When did Luther introduce the new worship?