Isaiah 11 seems clearly symbolic...I do not see how any of that relates to why the resurrection of Jesus must be literal though.
Then why did you make this comment?
Isaiah 11 was partially fulfilled with Christ and will be fully realised with an age of international peace.
Are you saying that the resurrection is irrelevant to a Christian interpretation of the fulfillment of prophecies about the "rod out of the stem of Jesse"? Like I said earlier, read at face value, in the context of scripture and history (whether truth or tradition), Isaiah 11 was obviously talking about events connected with the return of the Jews after the Babylonian exile - its quite easy to interpret the symbolism of the harmony between the figurative animals in terms of the passage itself - peace between Judah and Ephraim (i.e. the tribes that were previously at enmity) and between a restored Israel and their erstwhile oppressors - Assyria, Elam, Shinar etc. The "rod out of the stem of Jesse" was, of course, Zerubbabel - a descendant (according to OT tradition) of David - who acted as Governor of Judah under the sovereignty of the King of Persia. There is nothing left to be "fulfilled" in Isaiah 11 after about 500 BC. Of course that relatively peaceful era did not last long...
...but there is nothing in Isaiah 11 to even suggest that the writer imagined that it would be either global - indeed he even mentions that wars with other nations (the Philistines, Edom and Moab) would continue even in the era of "peace" he just described symbolically - or permanent. Neither is there any suggestion that peace would be lost and then partially re-established 500 years later and then lost again and then partially re-established another 1800 years on and then, eventually globalized at some unspecified date in the future of the Baha'i dispensation. None of that is even hinted at - it is not in the text, nor in the context nor in any sensible reading of history...
...However, what did happen 500 years later, was the appearance of the Christ - in one sense you might say he was a "resurrection" of Zerubbabel - the heir to the Davidic throne - no question that this is a Christian doctrine (based on a very tenuous and unconvincing genealogy). But of course he inconveniently died before taking the throne. It was absolutely necessary for him to be literally resurrected - a dead King was no use at all. That is the Christian interpretation and Isaiah 11 is brought to bear on that - but there is still nothing that points any further ahead in time than the second temple era - albeit this time the end of that era as opposed to the beginning. This time, the symbolism puts the "greater" "rod out of the stem of Jesse" at the helm of a Kingdom that would bring peace in men's hearts and have lion-like and lamb-like Christians lying down side by side in Christian harmony. That too didn't last too long...
...so now Baha'ism invents a third fulfillment with a new "rod out of the stem of Jesse" (based on an even more tenuous and far less convincing genealogy) - "the Ancient Beauty ruleth upon the Throne of David" (
Proclamation of Baha'u'llah, p.89)...
...but if Jesus really was resurrected and really did ascend to occupy the real throne of David in the Heavenly Jerusalem - well that's just a tad inconvenient - central to the Christian scriptural tradition or not, it simply has to go - to make room for another divinely appointed royal bottom to park itself thereon...
That is what Isaiah 11, and the "rod out of the stem of Jesse" and the prophesies that relate thereto have to do with whether the resurrection was literal or not - in the scriptural tradition - historical reality is a different matter altogether and has very little to do with Judaism, Christianity or Baha'ism.