מֵעֲרֹעֵ֞ר אֲשֶׁ֨ר עַל־שְׂפַת־נַ֧חַל אַרְנֹ֛ן וְעַד־הַ֥ר שִׂיאֹ֖ן ה֥וּא חֶרְמֽוֹן׃
mulai dari Aroer, yang terletak di tepi lembah Arnon, sampai ke gunung Siyon, yaitu gunung Hermon,
Ibn Ezra
between Paran and Tofel, and Lavan, and Ḥaṣerot, and Di-Zahav These places are either not mentioned in the parasha of Masey , or they are mentioned under different names. Many places have several different names (e.g., Mount S̀ e nir has three other names [cf. 3: 9 and 4: 48]).
Rashi
צידנים יקראו לחרמון וגו׳ THE SIDONIANS CALL HERMON SIRION — But in another passage it states, (Deuteronomy 4:48) “Even unto Mount Sion which is Hermon”. So you see it had four names. And why had they all to be written in Scripture? To tell the praise of the land of Israel: that there were four kingdoms (kings) priding themselves in this — one saying, "After me shall it be named", and another saying, "After me shall it be named" (Sifrei Devarim 37:10; cf. Chullin 60b).
Rabbeinu Bahya
צידונים יקראו לחרמון שריון והאמרי יקראו לו שניר, “The people of Tzidon would call Mount Hermon Siryon, whereas the Emorite would refer to it as Senir.” We find here three separate names seeing that in Deut. 4,48 Mount Hermon is also called Siyon. Why did the Torah have to record all these names of Mount Hermon? It was to give us an idea of the prominence and esteem in which the land of Israel was held. Everyone of these respective nations (their kings) would refer to his own land by a name reflecting a location in the land of Israel. [By calling his capital Mount Hermon in their language, they would pay tribute to that Mountain in Israel and to their own standing in Israel. Of course, in their arrogance, they would make believe that the Israelites had named their mountain to correspond to the capitals of their own respective countries. Ed.] (Sifri Eykev 37).