Here’s a couple sources. It’s from Luther’s 1520 ‘The Babylonian Captivity of the Church’. Ctrl-f to search within the page. I was ELCA Lutheran, until I saw their ‘journey’ apostasy. Interesting how many Lutheran sites don’t link to Luther’s writings.
http://www.gutenberg.org/files/34904/34904-8.txt
http://www.lutherdansk.dk/Web-babylonian%20Captivitate/Martin%20Luther.htm
Thanks.