Ezekiel 39:12
For seven months the house of Israel will be burying them, in order to cleanse the land.
Deuteronomy 21:23
his body shall not remain all night on the tree, but you shall bury him the same day, for a hanged man is cursed by God. You shall not defile your land that the LORD your God is giving you for an inheritance.
Ezekiel 39:14
They will set apart men to travel through the land regularly and bury those travelers remaining on the face of the land, so as to cleanse it. At the end of seven months they will make their search.
Ezekiel 39:16
(Hamonah is also the name of the city.) Thus shall they cleanse the land.
Numbers 19:16
Whoever in the open field touches someone who was killed with a sword or who died naturally, or touches a human bone or a grave, shall be unclean seven days.