Echad Mi Yodea

Echad Mi Yodea (Who Knows One?) is a popular song sung near the end of the Passover seder in many Jewish communities
Although it can appear to be simply a juvenile children's song, an important message is being imparted to those present at the Passover table. The main theme of Passover, and particularly of the Seder is not only the physical freedom of a nation of slaves. More importantly, it is the spiritual and mental freeing of this people, to become a nation unto G-d, His Chosen people. As His people, the Jewish Nation is expected to be wholly at one with G-d, and to relate everything in their lives to Him. It is sometimes thought that word association reveals the unconscious mind. Thus, it is at this point in the Seder that we sing this cumulative song. After relating G-d’s wonders and kindness, and the events of the Exodus, the song demonstrates how everything can and should relate to G-d: "If I say 'One', you think 'G-d!', if I say 'Five', you think 'Books of Moses!'"