And whoever touches the body of someone killed with a sword in the open fields, ¹  or the body of someone who died of natural causes, ²  or a human bone, or a grave, will be unclean seven days. ³ 

Indeed, the people will rise up like a lioness, and like a lion raises himself up; they will not lie down until they eat their ¹  prey, and drink the blood of the slain.” ² 

Then a ceremonially clean person must take hyssop, dip it in the water, and sprinkle it on the tent, on all its furnishings, and on the people who were there, or on the one who touched a bone, or one killed, or one who died, or a grave.

They killed the kings of Midian in addition to those slain – Evi, Rekem, Zur, Hur, and Reba – five Midianite kings. ¹  They also killed Balaam son of Beor with the sword. ² 

“Any of you who has killed anyone or touched any of the dead, remain outside the camp for seven days; purify yourselves and your captives on the third day, and on the seventh day.