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:
Luther wrote "Aus tiefer Not schrei ich zu dir" ("From depths of woe I cry to you") in 1523 as a hymnic version of Psalm 130 and sent it as a sample to encourage evangelical colleagues to write psalm-hymns for use in German worship. In a collaboration with Paul Speratus, this and seven other hymns were published in the Achtliederbuch, the first Lutheran hymnal. In 1524 Luther developed his original four-stanza psalm paraphrase into a five-stanza Reformation hymn that developed the theme of "grace alone" more fully. Because it expressed essential Reformation doctrine, this expanded version of "Aus tiefer Not" was designated as a regular component of several regional Lutheran liturgies and was widely used at funerals, including Luther's own. Along with Erhart Hegenwalt's hymnic version of Psalm 51, Luther's expanded hymn was also adopted for use with the fifth part of Luther's catechism, concerning confession.

Question:
What did Luther use the hymn to encourage colleagues to do?

write psalm-hymns