"GASP! He quoted Luther, the heretic! Better get the fires started!"
stopped clock... twice a day :-)
Luther was a disaffected employee. Bitter...angry and out of control.
The Biblical term encompasses both concepts. It is clear that Paul uses the term differently than James. Paul is concerned with legalists who said you must do so and so to be saved; whereas James is concerned with antinomians who figured they were saved, so it didn't matter what the heck they did. Both are right, and neither really contradicts the other. But they use the word with subtle differences.