Charles Ellicott Commentary 2 Chronicles 25:19

"Thou sayest, Lo, thou hast smitten Edom; and thy heart lifteth thee up to boast: abide now at home; why shouldest thou meddle to [thy] hurt, that thou shouldest fall, even thou, and Judah with thee?" — 2 Chronicles 25:19 (ASV)

Thou sayest. —Slightly altered from 2 Kings 14:10. Thou sayest, or thou thinkest, is added here. The word in Hebrew meaning Lo (hinnçh) is perhaps a corruption of the word meaning smiting (hakkçh): Thou hast indeed smitten.

To boast. —To get glory (hakbîd). Only so used here. Kings, thine heart lifteth thee up. Be honoured (i.e., enjoy your honors), and abide at home (hikkâ-bçd).