R.C. Sproul teaches the essence of the Reformation view of justification as he explains Martin Luther's latin phrase, "Simul Justus et Peccator."
From the teaching series, Luther and the Reformation: ligonier.org/learn/series/luther-and-the-reformation/
A transcript can be found here: ligonier.org/blog/simul-justus-et-peccator/
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