What does 2 Chronicles 21:9 mean?

Then Jehoram passed over with his captains, and all his chariots with him: and he rose up by night, and smote the Edomites that compassed him about, and the captains of the chariots.

Then Jehoram went forth with his princes, and all his chariots with him: and he rose up by night, and smote the Edomites which compassed him in, and the captains of the chariots.

Then Jehoram passed over with his captains, and all his chariots with him: and he rose up by night, and smote the Edomites that compassed him about, and the captains of the chariots.

Then Jehoram went over with his captains and all his war-carriages ... made an attack by night on the Edomites, whose forces were all round him ... on the captains of the war-carriages.

and Jehoram passeth over with his heads, and all the chariots with him, and it cometh to pass, he hath risen by night and smiteth the Edomites who are coming round against him, and the princes of the chariots,

And Joram went over with his princes, and all his cavalry with him, and rose in the night, and defeated the Edomites who had surrounded him, and all the captains of his cavalry.

And Jehoram went over with his captains, and all the chariots with him; and he rose up by night, and smote the Edomites who had surrounded him, and the captains of the chariots.