On page 22, Allah عَزَّ وَ جَلَّ explains that the change in the Qiblah (prayer direction) from Jerusalem to the Kaabah in Mecca was a test for true believers. Allah, Who owns both the East and the West, guides whom He wills. Muslims are made a just and exemplary nation, witnesses over mankind. The change in Qiblah was heavy for some, but a guidance for those Allah عَزَّ وَ جَلَّ guided. Allah, in His kindness, ensures that faith is not lost.
The Prophet Muhammad's turning towards the heavens is noted, and Allah عَزَّ وَ جَلَّ promises a Qiblah that pleases him, i.e., the Ka'bah. Muslims are instructed to turn their faces towards Al-Masjid-Al-Harâm (at Makkah) in prayer. The people of the Scriptures (Jews and Christians) know the truth of this change. Even if Muslims present proofs, the People of the Scriptures won't follow the new Qiblah, and vice versa. Following their desires would lead to wrongdoing.