Charles Ellicott Commentary 2 Chronicles 11:1

"And when Rehoboam was come to Jerusalem, he assembled the house of Judah and Benjamin, a hundred and fourscore thousand chosen men, that were warriors, to fight against Israel, to bring the kingdom again to Rehoboam." — 2 Chronicles 11:1 (ASV)

And when Rehoboam. — And Rehoboam came ... and he gathered. The chronicler omits 1 Kings 12:20, which relates the call of Jeroboam to the throne of Israel. The present verse is a slightly abridged form of 1 Kings 12:21.

The kingdom. — Mamlâkâh. In Kings: m’lûkâh.