After 700 posts deep into this thread, and my having posted probably a dozen unrefuted arguments for the primacy of direct revelation, including a significant analysis of 1Cor chapter 2, chapter 12, chapter 13, and honorable mention of 14 - after all that, I'm not sure why you have the gall to suggest my whole position stands or falls on whether I can prove some random conclusion somehow viewed as crucial in YOUR eyes.
But since you asked, shall we? To begin with, the question is inane, right? I mean, are you a believer in infinite regressions? There HAD to be a first prophet, right, that is, someone who did NOT have hands layed upon by another apostle or prophet?
You yourself claimed, and I concurred, that there ARE NO DIFFERENCES between OT prophets and NT prophets. Given that the OT prophets could be called by God without human intervention, then, by parity of reasoning, so can NT prophets. That's sufficient proof - I could go on, but I don't see the need to further address such a moot topic wholly inconsequential to the debate.
I mean, do you think God is somehow INCAPABLE of raising up prophets today, without human intervention? That somehow, after having that capability in the OT, he LOST it?
If you have any non-silly questions to ask me, I'll be glad to help out.