god would never give the book authority or prophesy to any person who would tell others to be his servants instead of being the servants of god. he would rather tell them to worship god for they had been teaching and studying the book.
ما كان لبشر أن يؤتيه الله الكتاب والحكم والنبوة ثم يقول للناس كونوا عبادا لي من دون الله ولكن كونوا ربانيين بما كنتم تعلمون الكتاب وبما كنتم تدرسون