means; one that touched such an one was unclean, or that touched the sword with which he was slain, as the Targum of Jonathan adds: "or a dead body": that dies a natural death, or suddenly, or in any way: or a bone off a man; dug out of a grave, and lying by itself: or a grave; the Targum adds, either the covering or side of a grave: shall be unclean seven days; all which has respect to the defiling nature of sin, which is the cause of death and the grave.