That Marx, who was himself Jewish and the grandson of rabbis, could write something so anti-Semitic just underscores how disturbed he really was. Could his hatred of businesses and religion have sprung from his own self-hatred of his Jewishness? It’s an interesting idea to ponder. It’s too bad many Jews do not realize how often anti-Semitism and Marxism have gone hand in hand.
Marx’s father himself converted to Lutheranism, changing the family name from Levy to Marx. It was most likely Karl’s education at the University of Jena where he fell in with the atheistic Hegelians and the beginnings of what he’d turn into had coalesced.