Death and the Red Heifer

Parsha Chukat is almost entirely about death. There is the red heifer whose ashes are used to purify those who come into contact with death, Miriam dies, Aaron dies, Moses is told he will die in the wilderness, and deadly snakes invade the camp. Oddly enough, all of this points to the fact that death is not permanent, and although it defiles, it is not to be feared.