There has been some open discussion of this subject lately particularly with a effort to discredit pastor Rick Warren and his purpose driven series of books. According to the information that I could find 'Replacement Theology' started a long time ago and basically was a effort to say that God was no longer concerned with the Jews and the old testament was no longer relevant etc... Those that are discrediting pastor Warren (In case you don't know a Southern Baptist as is Charles Stanley) are implying that he is saying that you can be saved by following his life principles! - I believe this crusade was started by the Calvary Chapel (a branch or off shoot of the Assemblies). This replacement theory is also being used against other pastors and thier attire, use of contemporary music by other pastors etc.. Look up the statement of faith of the Saddleback Church and compare this with the statement of faith of the Calvary Chapel and tell me who's got it right! - Pastor Warren is just saying now your saved get off your duff and do something and here are some principals that may help.