that the people of the book may know that they have no power whatsoever over gods grace and that all grace is in gods hand he gives it to whomever he wills. god is possessor of great grace.
لئلا يعلم أهل الكتاب ألا يقدرون على شيء من فضل الله وأن الفضل بيد الله يؤتيه من يشاء والله ذو الفضل العظيم