In this regard, Karl Marx wrote:

What are the mundane principles of Judaism? Practical necessity and the pursuit of one's own advantage. What is its earthly god? Money. The Jew has emancipated himself in a typically Jewish fashion not only in that he has taken control of the power of money, but also in that through him, money has become a world power and the practical Jewish spirit of the Christian people. The Jews have emancipated themselves insofar as the Christians have become Jews. The god of the Jews has become secularized and has become the god of the earth. The exchange is the true god of the Jews.