User blog comment:Omega natsu2/Chapter 369: The Place Prayers Reach, Predictions./@comment-4449950-20140128032255/@comment-76.93.214.139-20140128051327

Jellal knows the OS members' real names because they were all together as kids in the Tower of Heaven. As far as the whole "Midnight's illusions" theory and Jellal instructing Meredy to hang back goes, I find it completely plausible. Here's to hoping for a very alive Jellal in the next chapter.