New Revised Standard Version
Their territory was Jazer, and all the towns of Gilead, and half the land of the Ammonites, to Aroer, which is east of Rabbah,

Contemporary English Version
It included the town of Jazer, and in the Gilead region their territory took in the land and towns as far east as the town of Aroer just west of Rabbah. This was about half of the land that had once belonged to the Ammonites.

New American Bible
Their territory included Jazer, all the cities of Gilead, and half the land of the Ammonites as far as Aroer, toward Rabbah

Douay-Rheims Bible
The border of Jaser, and all the cities of Galaad, and half the land of the children of Ammon: as far as Aroer which is over against Rabba:

The border of Jaser, and all the cities of Galaad, and half the land of the children of Ammon: as far as Aroer which is over against Rabba:

their coast

Numbers 32:35 And Etroth, and Sophan, and Jazer, and Jegbaa,

half

Numbers 21:26-30 Hesebon was the city of Sehon the king of the Amorrhites, who fought against the king of Moab: and took all the land, that had been of his dominion, as far as the Arnon. . . .

Deuteronomy 2:19 And when thou comest nigh the frontiers of the children of Ammon, take heed thou fight not against them, nor once move to battle: for I will not give thee of the land of the children of Ammon, because I have given it to the children of Lot for a possession.

Judges 11:13-27 And he answered them: Because Israel took away my land, when he came up out of Egypt, from the confines of the Arnon unto the Jaboc and the Jordan: now, therefore, restore the same peaceably to me. . . .

Rabbah

Deuteronomy 3:11 For only Og king of Basan remained of the race of the giants. His bed of iron is shewn, which is in Rabbath of the children of Ammon, being nine cubits long, and four broad after the measure of the cubit of a man's hand.

2 Samuel 11:1 And it came to pass at the return of the year, at the time when kings go forth to war, that David sent Joab and his servants with him, and all Israel, and they spoiled the children of Ammon, and besieged Rabba: but David remained in Jerusalem.

2 Samuel 12:26 And Joab fought against Rabbath of the children of Ammon, and laid close siege to the royal city.

Ezekiel 21:20 Thou shalt make a way that the sword may come to Rabbath of the children of Ammon, and to Juda unto Jerusalem the strong city.

Amos 1:14 And I will kindle a fire in the wall of Rabba: and it shall devour the houses thereof with shouting in the day of battle, and with a whirlwind in the day of trouble.