Wright’s response to Piper and elucidation of his understanding of Paul’s writings on Justification is available here on sale.
Jimmy Dunn on E.P. Sanders view of Paul
… this presentation of Paul is only a little better than the one rejected. There remains something very odd in Paul’s attitude to his ancestral faith. The Lutheran Paul has been replaced by an idiosyncratic Paul who in arbitrary and irrational manner turns his face against the glory and greatness of Judaism’s covenant theology and abandons Judaism simply because it is not Christianity.Jesus, Paul and the Law, 187
