How do they admonish the witnesses in capital [cases]? They admit them and admonish them [saying to them]: Perhaps what you say is conjecture or hearsay, or testimony from the mouth of another witness, [or something] you heard from a reliable person; or perhaps you do not realize that we will check you through inquiry and examination. Know that capital cases are not like civil cases —- [in] civil cases, a person pays [back the] money and receives atonement; [but in] capital cases, his blood and the blood of his descendants are his responsibility until eternity. For so we find with Cain who killed his broth-er, as it is stated : The bloods of your brother cry out. It does not say the blood of your brother but the bloods of your brother —- his blood and that of his descendants. Alternatively, the bloods of your brother —- because his blood was spat-tered over the trees and stones. Therefore was man created singly, to teach you that whoever destroys a single life from Is-rael is considered by Scripture as if he had destroyed an entire world; and that whoever preserves a single life from Israel is considered by Scripture as if he had preserved an entire world. Also for the sake of peace among people, so that no man should [be able to] say to another, “My father was greater than yours.” And so that heretics should have no [reason to] say there are many powers in Heaven. And to teach the greatness of the Holy One, Blessed be He, for a man mints many coins from one mold and they are all alike, but the King of kings, the Holy One, Blessed be He, minted all men from the mold of Adam and not one is like another. Therefore, everyone is obligated to say, “For my sake was the world created.” Perhaps you will say, “What need have we for this trouble?” But it has already been stated: And he is a witness who saw or knew, if he will not attest, etc. And perhaps you will say, “What need have we to incur responsibility for this man’s blood?” But it has already been stated: When the wicked perish there is joy.