The Talmud says that priests are presumed to be knowledgeable (
bnei deah) regarding the Torah, while members of the tribe of Levi (to which priests belong) can frequently give halakhic instruction even in their youth. Priests had the ability to differentiate between
niddah and
zivah.
Targum Jonathan describes a Temple visit as an opportunity to learn from the rebuke of the "priests and sages". According to
Eliyahu Bakshi-Doron, the priest's jurisdiction extends not only to
tzaraath (as specified in ) but also to financial disputes.
Seforno argues that the priests, due to their experience as judges, were experts at understanding human behavior and
criminology. In the Midrash, the unusual knowledge of the kohanim was attributed to their consumption of
Terumah. Why this food consumption had this specific effect is a matter of rabbinic debate. One opinion is that due to receiving terumah the kohanim did not need to engage in business and therefore had the mind to devote to Torah study and instruction. Another opinion is that the actual food itself, being of
kodesh quality brought increased spiritual capacity to its kohen consumer. Rabbinic sources describe the
Priestly court which functioned at the
Temple in Jerusalem, and held jurisdiction over various matters related to the Temple service and the priesthood. According to
Obadiah ben Abraham, the instruction of the
High Priest carried as much weight as that of the entire
Sanhedrin. A rabbinic teaching likens a priest who speaks Torah to an angel (see ), and a priest who fails to speak Torah to an animal.
Levi and Aaron Maimonides states that
Jacob separated his son
Levi from his brothers and ordered him to study, and teach, the ways of service to God of his forefather
Abraham to his brothers, and that Jacob also instructed his sons to perpetuate this order of Levi for eternity.
Tanhuma writes that the sons of Levi were overly generous in their Torah instruction and succeeded at instructing their neighboring tribes to the point where they too became reliable Torah instructors. A midrash states that
Amram, father of Aaron, was the spiritual leader of the Israelites during their Egyptian slavery. After his death, this leadership role was assumed by his son
Aaron. Aaron, as the spiritual leader of the Israelites during their bondage in Egypt, and likewise after the arrival of
Moses and their ultimate redemption, was known to the nation as its instructor, a man of kindness, and as a peacemaker amongst arguing parties.
Modern views Rabbi Samson Raphael Hirsch explains this responsibility as not being the exclusive Torah instructors, but working in tandem with the rabbinic leaders of the era, while other rabbinic greats – notably the
Chasam Sofer and
Maharitz Chayes – acknowledged a unique assignment of torah instruction to the descendants of Aaron. ==In the Zohar and Kabbalah==