INTRODUCTION TO NUMBERS 19 This chapter contains a law for making a water for purification for sin, the ingredients of which are the ashes of a red heifer burnt, about which many things are observed, Num 19:1; the use of the water made of them, to purify such as were unclean by the touch of a dead body, Num 19:11; some rules are given, by which it might be known who were unclean on account of a dead body, Num 19:14; the manner of purifying such persons, Num 19:17; and the punishment of those that should neglect purification, Num 19:20.