Charles Ellicott Commentary 1 Kings 11:25

"And he was an adversary to Israel all the days of Solomon, besides the mischief that Hadad [did]: and he abhorred Israel, and reigned over Syria." — 1 Kings 11:25 (ASV)

Beside the mischief that Hadad did. —The expression, as it stands, is curiously abrupt in its recurrence to Hadad. But the text is doubtful. (See Note on 1 Kings 11:21–22.) If the general reading of the Septuagint is taken, the substitution of Edom for Syria (Aram) (it involves only a slight change in the Hebrew) must be accepted; if the explanation of Josephus is correct, then the reading of the text must stand.