at the heart of it he is teaching non-Jews to think Jewishly and teaching both non-Jews and Jews to think in the Jewish way as radically modified by Jesus.
The 2000 years of the Christian Church has disregarded this and made Jesus a westernised version of the Messiah which is not recognised through the OT. To a degree only Lip-service is paid to the links between the OT and Jesus by many believers but as NT Wright and others are revealing the link is much more fundamental than that!

