I am not convinced...
To disprove that Jesus (in His human form only) was not a Jew, you would need to disprove an entire bloodline as "non-Jewish".
I'll make it easy for you and point out the key players in Jesus's genealogy... if you want anyone with any biblical knowledge to take you seriously, prove that the below people are not from Jewish decsent.
David... son of Jesse... son of Obed... son of Naomi... this traces all the way back to Joseph, Benjamin, Jacob (aka Israil), Isaac and last but not least, Abraham. Abraham is where the Jewish blood line starts... and tracing Jesus all the way back to Abraham proves He was a Jew!