Matthew Poole and continuators on 2 Kings 9:14

14 So Jehu the son of Jehoshaphat the son of Nimshi, conspired against Joram: (Now Joram had kept Ramoth-gilead , he and all Israel, because of Hazael king of Syria:

Which Interpreters conclude to have been taken by Ioram before this time, though the taking of it be not mentioned. This they gather, First, From the mention of the inner chamber, ver. 2. and of the top of the stairs here. Secondly, From ver. 15. let none go forth out of the city. But these Arguments seem not to be cogent. Not the former, because there might be some Suburbs or out-Buildings be longing to the City, or not far from it, which the Israelites might have in their possession. Nor the later, as we shall there see. And if it was taken, why should all Israel be there to keep it, for which a strong Garison was sufficient? The words therefore may be otherwise rendred, exactly according to the Hebrew, Ioram had kept, or did keep (to wit, by his Army left there) or put guards, or laid siege at, or to (for so the Particle Beth is oft used) Ramoth-Gilead. And therefore he had all Israel, i. e. all the Military Force of Israel, with him, that he might both maintain the siege, and withall oppose Hazael who sought to relieve it.