we have seen you turning your face over and over again towards heaven. now therefore we turn you towards the giblah that you like best so turn your face towards the masjid haram. henceforth wheresoever you may be turn your face at prayer towards it. the people who were given the book know it well that the commandment is in fact from their lord and is based on the truth but allah is not unaware of what they are doing 
قد نرى تقلب وجهك في السماء فلنولينك قبلة ترضاها فول وجهك شطر المسجد الحرام وحيث ما كنتم فولوا وجوهكم شطره وإن الذين أوتوا الكتاب ليعلمون أنه الحق من ربهم وما الله بغافل عما يعملون