Part 2 of Luther takes out 1 John 5:7
Early pre-Luther German Bibles contained 1 John 5:7-8 such as:

👉1350 German New Testament (Augsbueger Biblehanscheift) Link
👉the Tepl Bible of 1389 (Link to 1881 Reprint Copy of 1389 Tepl codex) (1389 Tepl Bible)
👉1466 Mentelin Bible Link
👉1475 German Bible of Jocudus Pflanzmann,
👉1476 German Bible of Gunther Zainer,
👉1476 German Bible of Johannes Sensenschmidt & Andreas Frisner
👉1477 German Bible of Anton Sorg, 1478 Kolner Bible (low-German Bible)
👉1480 German Bible of Anton Sorg
👉1483 German Bible of Anton Koberger
👉1485 German Bible by Reinhard de Grunigen
👉1490 German Bible of Johann Schonsperger
👉First complete German Bible with Old and New Testaments, the 1529 Kautz Bible, contains 1 John 5:7

And yet Luther unbiblically omitted 1 John 5:7 from his 1522 New Testament, 1534 Bible, and all his Luther Bible editions during his life, despite much evidence to the contrary of 1 John 5:7's authenicity and quotations in multiple pre-1522 Bibles.

More information on Pre-Luther German Bibles containing 1 John 5:7-8:
👉https://textus-receptus.com/wiki/Johannine_Comma_and_German_Bibles
The below pages involve Michael Maynard's detailed research into 1 John 5:7 in pre Luther German Bibles and more:
👉https://archive.org/details/a-history-of-the-debate-over-1-john-5-7-8-by-michael-maynard/page/64/mode/1up
👉https://archive.org/details/a-history-of-the-debate-over-1-john-5-7-8-by-michael-maynard/page/65/mode/1up
👉https://archive.org/details/a-history-of-the-debate-over-1-john-5-7-8-by-michael-maynard/page/66/mode/1up
👉https://archive.org/details/a-history-of-the-debate-over-1-john-5-7-8-by-michael-maynard/page/67/mode/1up