Contradiction with 2 Chronicles 22:10
This verse states Athaliah killed all the royal heirs, contradicting the idea that Joash was hidden and survived.
2 Chronicles 22:10: But when Athaliah the mother of Ahaziah saw that her son was dead, she arose and destroyed all the seed royal of the house of Judah.
Contradiction with 2 Kings 11:1
It implies Athaliah destroyed all the seed royal, conflicting with Joash being saved.
2 Kings 11:1: And when Athaliah the mother of Ahaziah saw that her son was dead, she arose and destroyed all the seed royal. [seed...: Heb. seed of the kingdom]
Contradiction with 2 Samuel 7:16
This verse guarantees the perpetuity of David's lineage, contrasting with Athaliah's attempted annihilation.
2 Samuel 7:16: And thine house and thy kingdom shall be established for ever before thee: thy throne shall be established for ever.