Christopher Hitchens writes in his memoir, Letters to a Young Contrarian,

You can see the same immorality or amorality in the Christian view of guilt and punishment. There are only two texts, both of them extreme and mutually contradictory. The Old Testament injunction is the one to exact an eye for an eye and a tooth for a tooth (it occurs in a passage of perfectly demented detail about the exact rules governing mutual ox-goring; you should look it up in its context (Exodus 21). The second is from the Gospels and says that only those without sin should cast the first stone. The first is a moral basis for capital punishment and other barbarities; the second is so relativistic and “nonjudgmental” that it would not allow the prosecution of Charles Manson. Our few notions of justice have had to evolve despite these absurd codes of ultra vindictiveness and ultracompassion.”