There is no way back to Sinai, but this is acually good news, since no one could be saved according to the righteousness of the law. The only way to be saved, and therefore, to belong to the true Israel of God, is to be "in Christ."Reacting against a perceived tendency to reduce Paul's teaching to answering the question, How can I be saved?, the trend today is to say that the real question that concerns Paul (as it did all first-century Jews) was, Who are the people of God? In other words, it's a question of ecclesiology (defining "Israel"),...