[B-Chan]

It is the orthodox Lutheran belief that Christians were obligated to follow the doctrine established by Scripture

Where is this "scripture only" precept found in Scripture?

Who gets to decide what "the doctrine established by Scripture" is?

Who defined Scripture?

[Mr. Lucky]

Assuming that by Sola Scriptura you mean the belief that Scripture is the sole norm against which religious practices may be infallibly judged, that belief is instinct in Scripture.

Jesus Christ was, Himself, the Word of Scripture made flesh John 1. Christ, Himself, asserted the authority of Scrpture. Matthew 26:53-56 And, of course, the role of Scripture in determining the orthodoxy of faith and practice is confirmed by the Apostle Paul. 2 Timothy 3:16-17.

Scripture is believed by Lutherans to have been determined by the early Church fathers and not to require interpretation.

Now, let me ask you. What was the Authority for the Bishop of Mainz to sell Indulgences?