Conservative_Judaism Conservative Judaism (also known as Masorti Judaism in Israel and Europe) is a modern stream of Judaism that arose out of intellectual currents in Germany in the mid-19th century and took institutional form in the United States in the early 1900s.The principles of Conservative Judaism include A deliberately non-fundamentalist teaching of Jewish principles of faith; A positive attitude toward modern culture; and An acceptance of both traditional rabbinic modes of study and modern scholarship and critical text study when considering Jewish religious texts.