Kohen - Biblical Origins

Biblical Origins

The status of priest kohen was conferred on Aaron, the brother of Moses, and his sons as an everlasting covenant During the 40 years of wandering in the wilderness and until the Holy Temple was built in Jerusalem, the priests performed their priestly service in the portable Tabernacle (Numbers 1:47-54,Numbers 3:5-13,Numbers 3:44-51,Numbers 8:5–26) Their duties involved offering the daily and Jewish holiday sacrifices, and blessing the people in a Priestly Blessing, later also known as Nesiat Kapayim ("Raising of the hands").

When the First and Second Temples were built, the priests assumed these same roles in these permanent structures on the Temple Mount in Jerusalem. They were divided into 24 groups, each group consisting of six priestly families. Each of the 24 served for one complete week, with each of the six serving one day per week, on the Sabbath all six worked in tandem. According to later rabbinical interpretation these 24 groups changed every Sabbath at the completion of the Mussaf service. On the biblical festivals all 24 were present in the Temple for duty.

In a broader sense, since Aaron was a descendant of the Tribe of Levi, priests are sometimes included in the term Levites, by direct patrilineal descent. However, not all Levites are priests.

When the Temple existed, most sacrifices and offerings could only be conducted by priests. Non-priest Levites (i.e. all those who descended from Levi, the son of Jacob, but not from Aaron) performed a variety of other Temple roles, including ritual slaughter of animals, song service by use of voice and musical instruments, and various tasks in assisting the priests in performing their service.