 Polemic works: Mostradorde Justicia is the earliest and most important work of those writings of Abner that have survived. Only a translation (probably by Abner himself) in Castilian exists today, whereas the original Hebrew was lost. The book starts with a brief introduction wherein Abner writes about the reasons for his conversion (the incident in Avila and his two dreams). The main part of the book is a debate between a Christian (the master) and a Jew (the rebel). In contrast to other works similar to this type of polemic debate, in the Mostrador, the rebel does not become a Christian, and despite his losing the debate, the Jew continues to believe in his ostensibly false religion. The book is divided into ten chapters, with each chapter being subdivided into a number of paragraphs. Each paragraph is a speech by one of the protagonists of the  debate.[6]