Here's the thing, we both worship the same god, but there's a dispute about Jesus, Jews claim he was no savior of any kind, and Christians say he was the son of god, the Messias and the Jews murdered him and cast off god with it, opening the worship of Jahwe for all peoples not just the people of Israel.
How can any side be sure they are right? The jews are gods favourite, so are we Christians arrogant by claiming him for ourelves based on the accounts of 1 man that died on the cross?