Ezekiel 39:12
And seven months shall the house of Israel be burying of them that they may cleanse the land.
Deuteronomy 21:23
his body shall not remain all night upon the tree, but thou shalt without fail bury him that same day (for he that is hanged is accursed of God) that thy land not be defiled, which the LORD thy God gives thee for an inheritance.
Ezekiel 39:14
And they shall take men out of continual employment, who shall go through the land with the passengers to bury those that remain upon the face of the earth, to cleanse it; after the end of seven months they shall search.
Ezekiel 39:16
And also the name of the city shall be Hamonah. Thus shall they cleanse the land.
Numbers 19:16
And whoever touches one that is slain with a sword in the open fields or a dead body or a human bone or a grave, shall be unclean seven days.