Quoting The Master’s Seminary:
“It’s an insidious heresy that on the surface might look like it has some sense of scholastic splendor but, once you poke through the veneer, it’s nothing more and nothing less than theological poison” (Online source). Much has been said and written about NPP as we see from The Paul Page: Dedicated to the New Perspective of Paul, which you’ll has pieces both for and against so be aware.
There really hasn’t been a lot written at what refer to as “a lay level.” Dr. Gary Gilley has done a series which is pretty accessible for the average Christian and I’ll place the link below. I did mention the heresy of NPP briefly in “Reclaiming Paul?” Sorry; More Like Reimagining Paul. NPP is truly a rottern root which gives the postliberal cult of the Emergent Church more food for their reimagined inclusive “gospel” of social reform.
Of course we’re not surprised as all that N.T. Wright, before whom they bow as one of their most revered Golden Buddhas, is also one of the main teachers of this heresy. And wouldn’t you know, NPP is yet another attack on the vicarious penal substitutionary atonement. As funding allows I hope to be writing more on this because NPP’s been in seminaries for years, which means many pastors today adhere to it and/or are even teaching this fantasy of works-righteousness to unsuspecting churches.
Dr. Gary Gilley, The New Perspective on Paul
Phil Johnson, A Defense of the Old Perspective on Paul
Chris Arnzen, Iron Sharpens Iron radio program, J. Ligon Duncan III: “The New Perspective on Paul”
Monergism.com, New Perspective on Paul