עֲטָר֤וֹת וְדִיבֹן֙ וְיַעְזֵ֣ר וְנִמְרָ֔ה וְחֶשְׁבּ֖וֹן וְאֶלְעָלֵ֑ה וּשְׂבָ֥ם וּנְב֖וֹ וּבְעֹֽן׃
'Атарот, Дивон, Иазер, Нимра, Есевон, Елеала, Себам, Нево и Веон,
Chizkuni
אלה מסעי, “these were the journeys, etc.;” whenever a paragraph commences with the word: אלה the reason is to tell the reader that what follows is not connected to what was written previously. What this means here in practical terms is that only the journeys listed from here on in, but not עטרות and דבון, of which the Torah wrote in Numbers 32,3 and the locations mentioned there, are included in what follows.
Or HaChaim
את ה׳ האמרת היום להיות, "You have distinguished Hashem this day to be a G'd for you, etc." The reason the Torah added the word היום, "this day," may be understood in conjunction with what we learned in Ketuvot 110 that "anyone who lives in the diaspora is considered as if he did not have a G'd." The words את ה׳ האמרת היום apply only to people who are in the Holy Land. Even though at that precise moment the Israelites were still on the land that used to belong to Sichon and Og, this was considered part of the Holy Land seeing that it had been conquered by the whole nation at the command of their prophet Moses. We have discussed and proved this point in connection with our commentary on Numbers 32,3. Seeing that the land in question was no longer part of the diaspora, the Israelites could truly claim to have adopted the Lord as their G'd, and G'd in turn adopted them as His exclusive people.
Ramban
[AND MOSES SAID UNTO THEM]: ‘IF THE CHILDREN OF GAD AND THE CHILDREN OF REUBEN WILL PASS WITH YOU etc. THEN YE [Joshua and the princes] SHALL GIVE THEM THE LAND OF GILEAD FOR A POSSESSION.’ The reason for this [command that then ye shall give them …] is that Moses did not give them now all the land of Sihon and Og, but only a few cities in the land of Gilead which was a place fit for cattle, namely Ataroth, and Dibon, etc.123Verse 3 here. and those mentioned here,124Further, Verses 34-38. in which they built fortifications to settle their children and cattle therein, but the rest of the land they left waste. Therefore [Moses] commanded Joshua and the princes: “If they will pass over [the Jordan] with you, you shall give them all the land as a perpetual inheritance. But if they will not want to pass over with you,125Verse 30. you should take away from them all this land and drive out from it their wives and children, and give them an inheritance fitting for them in the land of Canaan, which they shall conquer for themselves when they cross over [the Jordan].” And Rabbi Abraham ibn Ezra commented: “But if they will not pass over125Verse 30. of their own free will, you shall take them with you against their will, and they shall take their possession there [in the land of Canaan] together with you.”
Rashi
ואת שבמה AND SIBMAH — i.e., they built (cf. v. 37) Sibmah also. This is identical with Sebam that is mentioned above (v. 3).