Numbers 31:17-19

New Revised Standard Version Updated Edition

¹⁷ Now therefore, kill every male among the little ones, and kill every woman who has known a man by sleeping with him.^{(A) 18} But all the young girls who have not known a man by sleeping with him, keep alive for yourselves. ¹⁹ Camp outside the camp seven days, whoever of you has killed any person or touched a corpse; purify yourselves, you and your captives, on the third and on the seventh day.