Judaism has several fast days, notably Yom Kippur. 猶太教一年之中有幾個把齋日，特別是贖罪日。
Freud also believed that Moses was murdered in the wilderness, producing a collective sense of patricidal guilt which has been at the heart of Judaism ever since. 弗洛伊德也相信摩西是在荒野上被刺殺，此后在猶太教徒的心中產生一種殺父罪疚感的集體意識。
But the very high rate of Jewish out-marriage since World War II has caused an official rethinking among the progressive elements of American Judaism. 但是第二次世界大戰以后，猶太人同外族通婚的比率極高，美國猶太主義者的進步力量便開始重新審視這一現象。