 For Polqar, since the philosophers have already demonstrated that God exists and that He is neither a body nor a force in a body, there is no need to repeat these arguments. For Abner, on the other hand, justifying the Trinity and the Incarnation and showing that these two doctrines are in agreement with philosophical interpretations is the basis upon which he wished to show the validity of Christianity and to convince as many Jews as possible to convert. To achieve this purpose, he quotes biblical verses and midrashim. One particularly interesting text he uses is the midrash on Psalms 50:1, and he writes: