Caldé of the Long Sun by Gene Wolfe

Gene Wolfe's Nightside the Long Sun launched the magisterial four-volume The Book of the Long Sun. Now the great tale continues in Caldé of the Long Sun. The young, god-inspired Silk, caught in a bloody web of politics and revolution, must fight against the machinations of the shadowy group that rules the city of Viron. The forces of other cities of the great spaceship, The Whorl, become involved. And the mysterious gods start to manifest themselves on all sides, a dysfunctional family of superpowerful beings each of whom can take possession of anyone at any time.