This is what we found on Wikipedia regarding the Bradley Marshall:

Bradley "Brad" Marshall is an American Democratic politician and the former chief financial officer (CFO) of the Democratic National Committee (DNC). In 2016, he gained notoriety after the DNC emails included an email in which he questioned the faith of the Jewish candidate for the Democratic nomination, Bernie Sanders. He wrote: "It might may [sic] no difference, but for KY and WVA can we get someone to ask his belief. Does he believe in a God. [sic] He had skated on saying he has a Jewish heritage. I think I read he is an atheist. This could make several points difference with my peeps. My Southern Baptist peeps would draw a big difference between a Jew and an atheist."