which area of the New Testament would you prefer to study at a PhD level?

[anvi]

Eons ago, the first scholarly study I ever read of the Apocalypse of John was a book called What the Spirit Said to the Churches by a Catholic priest whose name I can't recall or recover from internet searches (Hubert Richards or something??).  His historical dissection of the text, and in particular the gematria associated with persons identified in the apocalyptic genre, really fascinated me.  If I were to study the NT at a doctoral level, I'd like to work on something like that.  If that wasn't possible, then maybe studying the parables and their relation to Haggadah Midrash would be pretty fun too.