My mistake, it was actually chapter 32 that featured this bit.
I usually don't mind Christianity being promoted in anime but I'll agree with you.
What bothers me though, is the anti-Christianity in this current season.
Gabriel Dropout, Maid dragon, and Youjo Senki emphasis it to some degree.
What do they gain from doing this?
>christianity is a shit religion so we can have fun mocking it with zero consequences