The vast majority of people here are atheistic, and many, albeit not all, are ferociously anti-religion in any sense, with one or two being specifically anti-Semitic.
I personally am an Orthodox Jew. I get along reasonably well with a few of the atheists (they know who they are), clash with many (they ALSO know who they are), and naturally have no tolerance for the one or two anti-Semites (who MOST CERTAINLY know who they are).
In any case, although the primary "theorists" of "Flat Earth Theory" were mostly devout Christians, and used the Christian Bible to shore up their beliefs (think Rowbotham, Voliva, et al.), most of the FEers in here have been Atheists in my experience. Then again, So have most of the REers.
I am a Round Earther myself. And there certainly are other believers here, although I think most are Christian. One or two are Muslim, perhaps as many as five. I know there IS another Jew here, but he is not a religious one, to my knowledge.
So, my friend, you are in good company. Although I don't in any wise agree with you, welcome aboard. And do enjoy your stay.