Throughout human history, people have been assembling for various purposes. Commercial, cultural, political, and recreational purpose have drawn thousands if not hundreds of thousands. But nothing compares to the Hajj-a gathering of millions. The Hajj is an assembly of believers bound together for a single reason: to answer the call of the Lord of the Worlds, "Declare to the people the Hajj. They will come on foot and on every lean camel. They will come from every remote path." 22: 27] The result is an awe-inspiring gathering of faith. The Hajj-all of its motions and utterances-are for the...