Jcortez comes closest, another way to understand the concept of uncleanness which requires a ritual purification, such as following the menses or childbirth, is the fact that we do not merely clean the sacred vessels after communion, but they must be purified, and the cloth used to do this is a purificator. Surely the vessel was not soiled by holding Christ’s body and blood. Rather the vessel was dedicated to a sacred use and has to be ritually purified before it can be returned to use. In the same way, the woman’s body has been used by the Almighty as a vessel for life, the life-giving blood, the new baby with the attendant fluids and so forth, so before the vessel (her body) can be returned to normal “use”, the marital relation with her husband and even her presence in the home, preparing food etc., she must be purified ritually. That is why an observant Jewish community will build a community bath for that purpose even before erecting a synagogue, since the family life would breakdown if the woman could not be purified for her return to it.