In "The Tombs of Atuan", how come that The Nameless Ones didn't punish Ged for his initial intrusion of the labyrinth, Kossil for lighting up a fire in the Undertomb (while uncovering Ged's supposed grave) and Manan for traveling into areas forbidden for anyone but the high priestess, yet they did try to hurt Arha and Ged during their final flee from the labyrinth ?