Numbers 31:19 (KJV)
And do ye abide withoutthe camp seven dayswhosoever hath killedany personand whosoever hath touchedany slain purifyboth yourselves and your captiveson the third dayand on the seventh day
And do ye abide withoutthe camp seven dayswhosoever hath killedany personand whosoever hath touchedany slain purifyboth yourselves and your captiveson the third dayand on the seventh day