god granted a great favor to the believers by sending a messenger from their own people to recite to them gods revelations to purify them of moral defects to teach them the book and to give them wisdom. before this they had lived in manifest error.
لقد من الله على المؤمنين إذ بعث فيهم رسولا من أنفسهم يتلو عليهم آياته ويزكيهم ويعلمهم الكتاب والحكمة وإن كانوا من قبل لفي ضلال مبين