Thank you for picking one of the very best sections of the New Testament to destroy the heremeneutic of the dispensational crew. In Acts 15 we have the first "problem issue" on how to incorporate the Gentiles into what was, up until now, an almost exclusively Jewish church. It was unthinkable that these persons could be "saved" and not have to obey the distinctions of the covenant people that had been followed for years. In hammering this out, we had first Peter stand up and say in essence "God saved US by faith and we could not keep the law, so why do you want to saddle them with what we could not do, since we are both saved by faith alone." Then Paul and Barnabas stood up and told about all the miracles and changed lives God was doing by faith. Finally James stands up and quotes Amos and says THIS SCRIPTURE IS FULFILLED HERE. What is most interesting about this is that this scripture was NOT fulfilled ";iterally" There was no fallen tabernacle of David which had been restored and yet James specifically states that the Gentiles flocking to Christ are a direct fulfillment of this prophecy. I cannot think of a better example of "spiritualizing" or "allegorizing" an OT prophecy than James does right here.
This is a classic example of how dispensational hermeneutics is in opposition to the scriptures itself, and the insistence of "literal" interpretation of OT apocalyptic genre is in fact, contrary to the scripture itself.
So now you're accusing James of allegorizing the scriptures here??? He is doing no such thing. He is expounding upon Amos 9:11-12 as relates to the issue before the apostles, and his very exposition becomes scripture through the pen of Luke.
The "tabernacle of David" is not the temple, per se, but the city of Jerusalem, the city that David built, where the throne of David was and where Jesus will reign from. The prophets tell us that Jerusalem will be called "the throne of the Lord".
James is perfectly clear here, telling us that God will first visit the Gentile nations to take out of them a people for his name, after which He will return to rebuild and restore the city of David.