If You Could Only Pick Two Episodes

I will be giving a guest lecture at another university in October, on the subject of Doctor Who and religion. I was asked to pick two episodes that it might be worth watching in between now and my lecture, which might be shown at student events between now and my talk.

I have a couple in mind, but the truth is that there are a great many that would be appropriate choices for this purpose.

And so before I tell you which two I am inclined to go with, I thought I would ask readers of this blog: if you had to pick two and only two episodes from the show’s entire 50-year history to illustrate its treatment of religious themes, which would you choose?