Numbers 31:19
“You are to remain outside the camp for seven days. All of you and your prisoners who have killed a person or touched the dead are to purify yourselves on the third day and the seventh day.
Numbers 5:2
“Command the Israelites to send away anyone from the camp who is afflicted with a skin disease, anyone who has a bodily discharge, or anyone who is defiled because of a corpse.
Numbers 19:11-22
“The person who touches any human corpse will be unclean for seven days.
1 Chronicles 22:8
but the word of the Lord came to me: ‘You have shed much blood and waged great wars. You are not to build a house for My name because you have shed so much blood on the ground before Me.