12 He was with them hidden in the house of God six years: and Athaliah reigned over the land.
*Minor differences ignored. Grouped by changes, with first version listed as example.
Hid in the house of God - "In the house of the sanctuary of God." - Targum. Or, as he says on 2-Chronicles 22:11, בקודש קודשיא bekudash kudeshaiya "in the holy of holies." To this place Athaliah had no access, therefore Joash lay concealed, he and his affectionate aunt-nurse. - See on 2-Kings 11:1 (note).
And he was with them hid in the (i) house of God six years: and Athaliah reigned over the (k) land.
(i) Meaning, in the chamber where the priests and Levites slept, who kept their courses weekly in the temple.
(k) That is, of Judah.
he was with them hid in the house of God--Certain persons connected with the priesthood had a right to occupy the buildings in the outer wall, and all within the outer wall was often called the temple. Jehoiada and his family resided in one of these apartments.
*More commentary available at chapter level.