Contradiction with Exodus 6:23
This verse lists Aaron's sons and confirms Eleazar and Ithamar only, contradicting the addition of Nadab and Abihu before their deaths mentioned in Numbers 26:60.
Exodus 6:23: And Aaron took him Elisheba, daughter of Amminadab, sister of Naashon, to wife; and she bare him Nadab, and Abihu, Eleazar, and Ithamar.
Contradiction with Leviticus 10:1-2
Describes the death of Nadab and Abihu for offering strange fire, contradicting the implication that all four sons continued as priests in Numbers 26:60.
Leviticus 10:1-2: And Nadab and Abihu, the sons of Aaron, took either of them his censer, and put fire therein, and put incense thereon, and offered strange fire before the LORD, which he commanded them not.
Contradiction with Numbers 3:4
States that Nadab and Abihu died without children, which contradicts the implicit continuation of their lineage in Numbers 26:60.
Numbers 3:4: And Nadab and Abihu died before the LORD, when they offered strange fire before the LORD, in the wilderness of Sinai, and they had no children: and Eleazar and Ithamar ministered in the priest's office in the sight of Aaron their father.