And the children of Gad built Dibon, and Ataroth, and Aroer,
The children of Gad built - (see the note at Numbers 32:16).
Dibon - identified with the extensive ruins called Dhiban, three miles north of the Arnon (Mojeb).
Ataroth - crowns. There are several towns so called in Scripture; but this one in the tribe of Gad has not been identified, though it is supposed by some to be found in some ancient remains which bear the name of 'Atara.
Aroer - now Arair, standing on a precipice on the north bank of the Arnon.