How Is My Family Going to Endure Beyond the Bands of Death?

Joseph had a revelation in which he saw alvin in the celestial kingdom. He also marvelled that his unbaptized brother would be saved, but how specifically would he be saved? This is a kind of an unresolved question. T he sees the end, yet he doesn't see the means to the exactly. And i think this is really an important drivefor for joseph to seek direction and also to reason through how these doctrines salvation are to be administered and bind families together.