Numbers 19:16
And whosoever toucheth one that is slain with a sword in the open fields, or a dead body, or a bone of a man, or a grave, shall be unclean seven days.
And whosoever toucheth one that is slain with a sword in the open fields,.... That is killed by another, that dies a violent death, either by the sword or other 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.