Birth is a pure soul descending into an impure earth to purify the world.
The laws of purity and impurity may be summed up like this: the closer an experience is to the Source, the purer it is; the more distant, the more impure it gets. Birth is separating a soul from its natural habitat; no simple task. A mother immerses in pools of purity; offerings are brought. Male children are circumcised on the eighth day. When a spiritual flaw manifests upon a physical canvas, it is called “tzaraat.” Then the diagnostic expert is called in, the Kohen, proclaiming it pure or impure. One with “tzaraat” must remain outside of the camp; clothing with “tzaraat” must be destroyed.