For seven months the house of Israel will be burying them, in order to cleanse the land.
Ezekiel 39:12
Surrounding context
39:11 "It will come to pass in that day that I will give Gog a burial place there in Israel, the valley of those who pass by east of the sea; and it will obstruct travelers, because there they will bury Gog and all his multitude. Therefore they will call it the Valley of Hamon Gog.
39:12 For seven months the house of Israel will be burying them, in order to cleanse the land.
39:13 Indeed all the people of the land will be burying, and they will gain renown for it on the day that I am glorified," says the Lord GOD.