Charles Ellicott Commentary 2 Chronicles 13:2

"Three years reigned he in Jerusalem: and his mother`s name was Micaiah the daughter of Uriel of Gibeah. And there was war between Abijah and Jeroboam." — 2 Chronicles 13:2 (ASV)

His mother’s name was also Michaiah the daughter of Uriel of Gibeah. —Kings reads for these names Maachah the daughter of Abishalom; and since the chronicler has already designated Abijah as the son of Maachah, daughter of Absalom (2 Chronicles 11:20–22), there can be no doubt that this is correct, and that “Michaiah,” which is elsewhere a man’s name, is a corruption of Maachah. This is confirmed by the Septuagint, Syriac, and Arabic, which read Maachah.

As we have already stated (2 Chronicles 11:20), Maachah was granddaughter to Absalom, being the daughter of Tamar, Absalom’s only daughter. Uriel of Gibeah, then, must have been Tamar’s husband. (See the commentary on 2 Chronicles 15:16. Uriel of Gibeah is otherwise unknown.)

And there was war between Abijah and Jeroboam. — Now war had arisen. See 1 Kings 15:6. Now war had prevailed [same verb] between Abijam [the common Hebrew text incorrectly has Rehoboam] and Jeroboam all the days of his life. The chronicler modifies the sense by omitting the concluding phrase and then proceeds to give a striking account of a campaign in which Abijah totally defeated his rival (2 Chronicles 13:3–20), of which we find no word in Kings.