How this whole Lutheran thing got started
I think the video is self-explanatory. But I should point out there may be some slight inaccuracies. One I know I made was when, some time later in the presentation I referred to the Germans as "the Lutherans." I think that you'll pick up on it.
NOTE: Abraham believed and God counted his belief as "righteousness" in Genesis 15:6, and not in Genesis 12, as I erroneously say in the video.