"My Rabbi is Rabbi Jesus?" A Sermon on the Danger of So-Called "Messianic Jews"

(Forgive the audio:  I was not wearing my microphone during this sermon.)   Is it alright to claim to be African-American, Native-American, or a Jew just because you identify with it?  Is identity a matter of personal choice, or is it wrong to claim a history and inheritance --especially one that involves severe persecution-- that isn't yours?  Today a new form of identity theft is spreading by Christians claiming to be "Jews" and our "friends."   They are "Jews" just like us,they say, except they believe that Jesus was the Messiah and our salvation is only through acceptance of Jesus as our savior.  What should we think?