Priests can be found in the chapel. Don't hold your breath for spiritual counseling, though you might get molested if you ask nicely.

Wolfwood

(Ignore the sounds in his room. It's probably some mazoku being walled)

Hidan

Considers "kill 'em all and let god sort 'em out" to be the most apt suggestion of all time. Probably not the best person to go for if you want religious guidance.

Dropped characters

Sanzo went home, where he'll probably be just as pissy as he was in camp. Maybe more.

Miroku was awesome, but in the end he never found a woman to bear his child

he might have been luckier if he had asked one of the boys.