Ezekiel 39:12
And seven months shall the house of Israel be burying them, that they may cleanse the land.
Deuteronomy 21:23
His body shall not remain all night upon the tree, but you shall surely bury him that day; (for he that is hanged is accursed of God;) that your land be not defiled, which the LORD your God gives you for an inheritance.
Ezekiel 39:14
And they shall set apart men of continual employment, passing through the land to bury with the travelers those that remain upon the face of the land, to cleanse it: after the end of seven months shall they make a search.
Ezekiel 39:16
And also the name of the city shall be Hamonah. Thus shall they cleanse the land.
Numbers 19:16
And whosoever touches 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.