R.Scott Clark concerning Reformed piety, and it’s denial of two distinct classes of the Christian (ordinary & extraordinary/spiritual).
“When, in 1517, Luther complained about the abuse of indulgences, he began a movement back to Scripture and toward a biblical understanding of piety in which Christ’s grace received in public worship overflows into private prayer and family devotions. He repudiated the error that there are two classes of Christians, and he repudiated their spiritual exercises. The Reformed followed him back to Scripture. But history tells us that there is a monk within each of us, continually looking for new ways to corrupt Christian piety, seeking to draw our eyes away from Christ, His grace, and His piety.”
~ R.Scott Clark