Pretending to be Jewish is a thing among some evangelical Christians. They assume a Jewish identity and then attempt to convert Jewish people to Christianity. However, I don't think this is what this man is doing. He's a grifter who used the Jewish faith to grift. Considering his social media presence, I wouldn't be surprised if he was angling for a reality show or something. There's lots of TV shows featuring big Christian families but none with big Jewish families which is what his social media is about.

Source: The Guardian (Evangelicals pretending to be Jewish.)

The Independent