According to Abrahamic religions, Aaron was a prophet, a high priest, and the elder brother of Moses. Information about Aaron comes exclusively from religious texts, such as the Hebrew Bible, the New Testament, and the Quran.

The Book of Numbers is the fourth book of the Hebrew Bible and the fourth of five books of the Jewish Torah. The book has a long and complex history; its final form is possibly due to a Priestly redaction of a Yahwistic source made sometime in the early Persian period. The name of the book comes from the two censuses taken of the Israelites.