" The mechanism of salvation was now the New Testament, faith in Christ. The covenantal promises to Abraham no longer applied to his present descendants, but to Christians: ‘And if you are Christ’s, then you are Abraham’s offspring, heirs according to promise.’97 What Jesus challenged, and Paul specifically denied, was the fundamental salvation-process of Judaism: the election, the covenant, the Law. They were inoperative, superseded, finished. A complex theological process can be summed up simply: Jesus invented Christianity, and Paul preached it. "

― Paul Johnson , A History of the Jews