I've yet to find a Christian group of believers whose "confession" is not "found in Scripture". Including the "lib Lutherans".
Clearly, it isn't self-interpreting.
FYI lib lutherans support abortion, homosexuality as normative, and the ordination of women. As a result, even a Catholic with little discernment can deduce they don't follow God's Word.
Yet they say that they do. They can plunge into Scripture and pull out quotes to support their viewpoint just like you.
And who are you to contradict them?
'They' can say what they want, they have deserted God's Word. Now it takes a little bit of discernment to see it, but when you all take a pro-abort stance in the name of unity, you might see it. Good luck with the libs.
And who are you to contradict them?
Someone who follows Scripture. It really is that easy.
The lib lutherans claim the doctrine, but manifestly don't follow it. Not that tough.