Albert Barnes Commentary Deuteronomy 3:4

"And we took all his cities at that time; there was not a city which we took not from them; threescore cities, all the region of Argob, the kingdom of Og in Bashan." — Deuteronomy 3:4 (ASV)

Sixty cities - Probably the cities of Jair in Bashan described in (Deuteronomy 3:14) as Bashan-havoth-jair.

All the region of Argob - The Hebrew word here rendered “region,” means literally “rope” or “cable”; and though undoubtedly used elsewhere in a general topographical sense for portion or district (e.g., Joshua 17:5), it has a special appropriateness in reference to Argob (modern Lejah). The name Argob means “stone-heap,” and is paraphrased by the Targums, Trachonitis (Luke 3:1), or “the rough country;” titles designating the more striking features of the district. Its borders are compared to a rugged shoreline; hence, its description in the text as “the girdle of the stony country,” would seem especially appropriate. (Others identify Argob with the east quarter of the Hauran.)