 It is interesting to note that this philosophical book that Abner wrote at the end of his life, more than twenty years after his conversion, is almost without Christian  references.[17]  In spite of this, the book is full of references to Jewish sources, including the Talmud and quotations of Jewish authorities like  Maimonides.[18]  We see that Abner, even many years after his conversion, wrote to the Jewish community and was part of the internal Jewish debate about the question of determinism. In fact, Abner is the first medieval Jewish philosopher to argue for a deterministic explanation of the world. His opinion influenced Rabbi Hasdai Crescas (who paraphrased an important part of Ofrenda de Zelos in his major philosophical work The Light of the  Lord[19]),  and through him, Spinoza. Some Jewish philosophers, like Rabbi Isaac Pulgar, Rabbi Mosses from Narbonne, and Rabbi Josef Ben Shem  Tov[20]  respond explicitly to the determinist opinion of Abner, such that there is no doubt that his opinion had a major influence on the internal Jewish debate on the question of free will throughout the 14th and 15th centuries. 