He mounted the steps from the garden in haste, eager that some prey should not elude him, and forced his way through the crowd in the hall and past the two jesuits who stood watching the exodus and bowing and shaking hands with the visitors.
There are no more uses of "exodus" in the book.
Show samples from other sources
Just to be thorough, she peeks in to make sure there are no stragglers, or kids trying to avoid the mass exodus.
Neal Shusterman -- Unwind
Packed up their camper on the afternoon of the sixth day with everything they could fit and hit the road, joining a mass exodus to somewhere else, because anywhere else seemed safer for some reason.