He may have been wanting to usher in the rapture events, the end times of prophesy. If they are truly the last "neolithic" undisturbed tribe on earth, that would make sense. Some folks believe that once every man has had a chance to hear the gospel and either accept or reject Jesus as Messiah, that Christ will be ready to "claim His bride"..which is the body of believers, and to set in motion the Rapture, tribulation period, defeat of Satan by Christ himself, and finally the Millenial Reign of Christ on Earth. All of these events are foretold in Revelations, as well as some events that were to take place before the Rapture happens. I believe, as do many other folks, that all of the events have now taken place as foretold...and there is nothing else that needs to occur before all of the believers are called up in the Rapture. We are just waiting for Christ to decide the time is right, or that everyone has had a chance to accept Him as the Messiah. This Pastor has spent time in those islands before, i would bet he knew well what he was up against. He was prepared to die if need be.