Anglican bishop N.T. Wright has written extensively on the topic of justification (see also New Perspective on Paul). His views are troubling to many evangelicals, and have sparked some debate. Those concerned with his view of justification worry that he marginalizes the importance of the penal substitutionary transaction that takes place at salvation. Defenders of Wright respond by saying that, while the bishop acknowledges advocacy of penal substitution in many biblical texts, he does not see its application in scriptures other evangelicals might. Proponents of Wright's view of justification warn detractors to "read him well" before criticizing his theology forthright.