Bizarre Burial?

What are the earliest sources in the Torah for the commandment, purpose and benefit of Taharas Hamishpacha and Mikvah?

A cornerstone of our belief is that a life of good deeds is rewarded with “a world that is truly good” in the Hereafter.
Is there another way? Can one “purchase” eternal reward on the open market? Can you get the “deal of a lifetime” (or the afterlife!) on ebay?
What are the Halachic principles of such a transaction? Can one buy or sell such ‘intangibles’? Would the transaction by valid, legal tender? Do “free market principles” and “art of the deal” apply? How does this compare to the historic partnership of Yissachar-Zevulun?
Includes a collection of stories about tzadikim who engaged in such “commerce” throughout the ages for the benefit of klal Yisroel.

From the moment Avrohom circumcised himself at 99, the Jewish Bris has been the pivotal act of Jewish identity throughout history. It is at this moment that a Jewish boy is given his name. Yet when a bris must be delayed for medical reasons, can the parents give him his name anyhow, or must the boy remain nameless until the Bris takes place? 

A comprehensive examination of the ancient promise that those who attend a bris are forgiven of all their sins. Where did the legend start? To whom does it apply? And how seriously do we take it today?

“Either way, they are My children” [Talmud].
Blood is thicker than water, they say. The bonds of family are the anchor of an emotionally and spiritually healthy life. But what happens to these relationships after one passes on? Do we “meet again on the other side”? Do families stick together in the hereafter? What about teachers and their pupils? Is this contingent on whether the two are buried in close proximity?
Do the souls of the departed maintain a relationship with those left behind? Do they relate to and empathize with the trivialities of our corporeal existence? Does prayer at their grave-site invoke merit on their behalf?