We have made you (true Muslims) a moderate nation so that you could be an example for all people and the Prophet an example for you. The direction which you had been facing during your prayers (the qibla) was only made in order that We would know who would follow the Messenger and who would turn away. It was a hard test but not for those to whom God has given guidance. God did not want to make your previous prayers worthless; God is Compassionate and All-merciful.