With guidelines on everything from dressing to eating to trading, Islam is woven through the world itself rather than confined to church on Sundays.”
-- Power (“Introduction: A Map for the Journey” paragraph 31)

Importance: Power is talking about the extent of the Quran, which is the divine book of the Prophet Muhammad. These guides are seen in the everyday lives of Islamic people, and give instructions on everyday life. Power's perspective is from that of a secular person who is not well-versed in Christianity or other religions, and that affects some of her writing. For example, some Christians may object to this view because they believe the Bible is also meant to be followed in daily life.

During the Prophet's era, women prayed freely in mosques along with men, but in time, many cultures began restricting their presence. Over the centuries, the scholars' consensus that women didn't have to go to the mosques to pray if they couldn't get away...
-- Power (Chapter One, “The Quran in Twenty-Five Words” paragraph 13)