I actually got all of that from your original post (well, not the April 1st part, but that is only because I included today when I counted the 3 days (Friday, Saturday, and then Sunday...which is part of the reason I made the resurrection comment...well that and I was making fun of your messiah complex )).
Hmm and I just realized my previous vm wasn't very useful if what you wanted was to understand the joke but it's half a stupid and untranslatable pun between Back from the Future and the Pentecost, half a private joke about having an epiphany from the grave and a third half (and the only one understandable in english) about the fact that itachi-san and me agreeing on something must be an April fool in advance.
Well considering being always right is obviously(!) something I share with Hashirama and Naruto I might as well have the Messiah thing going on too.
And 3rd days from now comes right on April fool so that's perfect, I'm so bubbly and super fun!