Hm...well, there's no "proving" divine revelation/inspiration from a historical sense.
But, follow this train of thought:
Point A: Demonstrate the resurrection to be true (historically). I feel like we've discussed this quite a bit, but if you can prove this single event, everything falls into place.
Point B: Give Jesus credibility. I mean, if he is a guy that rose from the dead, you ought to lend your ear.
Point C: Accept Jesus's stamp of approval on the Old Testament.
Point D: Accept Jesus's prophecy that the Holy Spirit will come again to bring more revelation (which is the New Testament).
Then you can go back and interpret history in the new light of Point C and D.
Of course, everything hinges on Point A...if false, everything crumbles, but if true, everything stands strong.