Bingo!
"There is no form of Christianity that can survive without belief in a literal Resurrection."
"Bingo!"
And of course, without Christianity, there is no reason to pay any attention to the Jewish Old Testament at all.
The whole Bible, both Testaments, and everything else about Christian religion, reposes on the literal truth of the Resurrection.
If I didn't believe the Resurrection actually happened in real time in real history (something I don't, incidentally, happened literally in the case of, say, Jonah and the whale), then I'd say we ought to chuck the whole Judaeo-Christian religious business as a repressive and restrictive set of rules. If we've gotta have religion, the cults of Venus, Mars and Jupiter Capitolinus were a whole lot more FUN. Then we could get back to "fertility rites", temple practices that would make the author of the Kama Sutra blush, and everybody...or every male in the country anyway, would go to church every damned day.
If there is no truth in religion, it ought to be fun. Roman pagan religion was a hell of a lot of fun.
The Romans chucked it because they were convinced of the actual TRUTH of the Resurrection, but if Jesus is just a rotting bag of bones outside of Jerusalem, per a professor in a Christian divinity school, well then Hell's Bells! let's get back to that good real old time religion, replete with lots of orgies and vomitoria. If the Resurrection didn't happen, maybe Venus is a goddess and we can fornicate our way into heaven.
If the Resurrection did happen, then maybe we ought to just do what Jesus said. Like be unified as Christians, for instance.