C. F. Keil and Franz Delitzsch on Leviticus 15:28-31

Lev 15:28-31

After the issue had ceased, she was to purify herself like the man with an issue, as described in Lev 15:13-15. - Obedience to these commands is urged in Lev 15:31 : “Cause that the children of Israel free themselves from their uncleanness, that they die not through their uncleanness, by defiling My dwelling in the midst of them.” הזּיר, Hiphil, to cause that a person keeps aloof from anything, or loosens himself from it, from נזר, Niphal to separate one’s self, signifies here deliverance from the state of uncleanness, purification from it. Continuance in it was followed by death, not merely in the particular instance in which an unclean man ventured to enter the sanctuary, but as a general fact, because uncleanness as irreconcilable with the calling of Israel to be a holy nation, in the midst of which Jehovah the Holy One had His dwelling-place (Lev 11:44), and continuance in uncleanness without the prescribed purification was a disregard of the holiness of Jehovah, and involved rebellion against Him and His ordinances of grace.