harangue: lecture (someone) at length in an aggressive and critical manner.

Somebody wrote this about Christian retards who go to church every Sunday:

"Christians constantly need refresher brainwashing. They never seem to ask themselves why they have to sit in church every Sunday and listen to the same hocus-pocus over and over and over again. If it's all true, why do they have to be harangued about it every week for the rest of their lives?"