Levi (sources)
Survey of ancient sources on Aaron.
Ancient Jewish sources
Genesis
Gen 29:34 -- Again she (=Leah) conceived and bore a son, and said, "Now this time my husband (=Jacob) will be joined to me, because I have borne him three sons"; therefore he was named Levi.
Gen 34:1-31 -- ... [25] On the third day, when they were still in pain, two of the sons of Jacob, Simeon and Levi, Dinah's brothers, took their swords and came against the city unawares, and killed all the males... [30] Then Jacob said to Simeon and Levi, "You have brought trouble on me by making me odious to the inhabitants of the land, the Canaanites and the Perizzites; my numbers are few, and if they gather themselves against me and attack me, I shall be destroyed, both I and my household." [31] But they said, "Should our sister be treated like a whore?"
Gen 46:11 -- The children of Levi: Gershon, Kohath, and Merari.
Gen 49:5-7 (NRSV) -- (Jacob said:...) [5] Simeon and Levi are brothers; weapons of violence are their swords. [6] May I never come into their council; may I not be joined to their company-- for in their anger they killed men, and at their whim they hamstrung oxen. [7] Cursed be their anger, for it is fierce, and their wrath, for it is cruel! I will divide them in Jacob, and scatter them in Israel.
Exodus
Ex 1:1 (NRSV) -- [1] These are the names of the sons of Israel who came to Egypt with Jacob, each with his household: [2] Reuben, Simeon, Levi, and Judah, [3] Issachar, Zebulun, and Benjamin, [4] Dan and Naphtali, Gad and Asher.
Ex 6:16 (NRSV) -- [16] The following are the names of the sons of Levi according to their genealogies: Gershon, Kohath, and Merari, and the length of Levi's life was one hundred thirty-seven years.
Numbers
Num 3:17 (NRSV) -- The following were the sons of Levi, by their names: Gershon, Kohath, and Merari.
1 Chronicles
1 Chr 2:1-2 (NRSV) -- [1] These are the sons of Israel: Reuben, Simeon, Levi, Judah, Issachar, Zebulun, [2] Dan, Joseph, Benjamin, Naphtali, Gad, and Asher.
1 Chr 6 (NRSV) -- [1] The sons of Levi: Gershom, Kohath, and Merari. ... [16] The sons of Levi: Gershom, Kohath, and Merari.
Early Christian sources
Hebrews
Heb 7:9-10 (NRSV) -- [9] One might even say that Levi himself, who receives tithes, paid tithes through Abraham, [10] for he was still in the loins of his ancestor when Melchizedek met him.