Historically, Jews have been defined as a religious group and continue to be so defined by scholars. Thus, an overwhelming majority of Jews define themselves accordingly. In fact, most major surveys conducted on America’s Jews that pertain to religion typically inquire about denominational affiliation, synagogue or temple membership, attendance at synagogue or temple services, and performance of basic rituals. This follows from the classic definition of religion as defined by the French sociologist, Emile Durkheim (1858-1917), who suggested that religion is “a unified system of beliefs and practices relative to sacred things, that is to say, things set apart and forbidden - beliefs and practices which unite into one single moral community, called a Church, all those who adhere to them.” However, these questions and their corresponding responses do not provide sufficient information on the religious beliefs or religious behavior patterns of American Jews. Indeed, such a perspective misses much of what most American Jews view as their religious needs and character. This essay goes beyond those data and examines American Jewish patterns of religious behavior as well as belief in a sociohistorical context. In an effort to unravel the meaning behind these actions or convictions, I examine and interpret the various patterns, their changes over time, and their relationship with the broader patterns of religious behavior and belief within American society.