DOCTOR WHO meets the Old Testament Pseudepigrapha!

My son and I just finished watching episode 2 of Doctor Who Series 4 (trailer here), which episode takes place in Pompeii on 23 and 24 August 79 CE. I'll avoid spoilers, but at one point the Sibylline priestesses quote Sibylline Oracles Book 13 as predicting the coming of The Blue Box. That line isn't in our copies of Book 13 today, but maybe our text is corrupt.