Numbers 33:45

They departed from Iim, and pitched in Dibon-gad— It is said, chap. Numbers 21:12 that they removed from thence, and pitched in the valley of Zared, near which, probably, Dibon-gad was situated. Most interpreters take Dibon-gad to be the same place which is called Dibon, and which fell to the portion of the Gadites, chap. Numbers 32:34 and is therefore called Dibon-gad, to distinguish it from another Dibon, which fell to the Reubenites, Joshua 13:17. But the context shews, that this Dibon was on the south side of Arnon, in the wilderness of Moab; whereas Dibon, both of the Gadites and Reubenites, was on the north side of that river. See Le Clerc.