What is Luther?

When Martin Luther discovered that some had begun calling the first Protestants “Lutherans,” he strongly objected. It is funny to think that some 500 years later, many are still known by his name:

What is Luther? The teaching is not mine. Nor was I crucified for anyone. . . . How did I, poor stinking bag of maggots that I am, come to the point where people call the children of Christ by my evil name?

Luther was deeply concerned about the danger of…