It is written in the Torah that Aaron, of the tribe of Levi, received from God the monopoly of the priesthood. Aaron’s family had the exclusivity and responsibility to make offerings at the altar of God, first in the Tabernacle and later in the Temple in Jerusalem. They were also obligated to bless the people, redeem the firstborn, and teach the Torah (Leviticus 10:10-11). They were also required to remain pure, meaning they could not be near a corpse or marry divorced women, converts to Judaism, or promiscuous women. These obligations and prerogatives would be passed from father to son. From this derives the division of the people of Israel into three groups: the priests or Kohanim, who are the descendants of Aaron; the other Levites who are not descendants of Aaron; and the rest of the people of Israel.
With the destruction of the Temple, the cohanim lost their role of making sacrifices and were left exclusively to bless the people and redeem the firstborn. The teaching of the Torah passed into the hands of the rabbis. Over time, the custom became established, as it is not written anywhere, that the cohanim are the first to bless the reading of the Torah.
Orthodox Jews retained the roles and restrictions of the cohanim. Depending on the Orthodox community, the cohanim bless the people on various religious occasions and are prohibited from freely marrying or approaching the dead. Some Conservative communities follow the same rules, but in most liberal movements, the role of the cohen was practically eliminated. They argue that without the Temple, there is no justification for having priests and it is very difficult to conclusively prove descent from Aaron.
Generally, the blessing ceremony requires the cohanim to come forward, cover their heads with tallit, extend their arms high, and place their fingers in a specific shape, while repeating the three blessings stipulated in the Torah. In the Reconstructionist movement, on the other hand, it is customary for the entire family to cover themselves with the father’s tallit and recite the same blessings. The Reformists practically eliminated everything related to the cohanim. In the Conservative movement, there has been extensive debate about whether women descended from a cohen have the same rights as men, and opinions are divided, but they did eliminate all prohibitions regarding marriage.
Rabbi Bradley Shavit Artson, rector of the Ziegler School for Rabbinic Studies for the Conservative movement, some time ago reintroduced the cohanim blessing on the major holidays in his congregation. He argues that every society develops a network of stories, prohibitions, festivals, ceremonies, and institutions that must be preserved, as long as they do not contradict the moral convictions of the group, do not become a heavy burden for its members, violate the values of the world around us, and do not alienate the Jew from his heritage. The difference in their ceremony of «dijenen,» blessing, is that it prepares the group of cohanim who will participate for a year and includes women daughters of cohanim.
The Lord said to Moses (Bamidbar 6:24–26): «Say to Aaron and his sons, ‘This is how you shall bless the children of Israel. Say to them: God bless you and keep you; God make his face shine upon you and grant you his favor; God lift up his countenance upon you and grant you peace.'» The blessing of the cohanim is not only not a relic, it is an inheritance that transcends time.
By Marcos Gojman
Bibliography: Article by Bradley Shavit Artson and other sources.