Was Jesus Jewish?

On a series of 4 posts I will try to identify Jesus' origins:

Was he a Jew?'

Let's see...
1. He worked at the same business he father owned.
2. He lived at home until he married (let's assume) ... at 33 years of age.
3. He was sure his mom was a virgin and his mother was 100% sure that he was God himself.

Tomorrow paradigm 2.