Prophecy ended many times in the OT. But, as the people humbled themselves and climbed out of apostasy, prophets were again established and the Urim and Thumim were again available. An analogy for you. We haven't had a rex roam the earth for 65 million years. But, it is becoming more and more possible to bring back extinct creatures from the past. It's not so much a science fiction thing as it used to be in the past. Extinction doesn't mean forever. Anymore than death has to be forever because of the atonement of Jesus Christ. Resurrection of the dead or extinct persons is now possible.