וַיִּ֣ירְשׁ֔וּ אֵ֖ת כָּל־גְּב֣וּל הָאֱמֹרִ֑י מֵֽאַרְנוֹן֙ וְעַד־הַיַּבֹּ֔ק וּמִן־הַמִּדְבָּ֖ר וְעַד־הַיַּרְדֵּֽן׃
I zawładnęli całą dziedziną Emorejczyka, od Arnonu aż do Jabboku, a od pustyni aż do Jordanu.
Rashi
They took possession, etc., from Arnon to the Yabok. Which you claim as yours, they annexed from Sichon.
Rashi
From the wilderness to the Yardein. There was a wilderness area adjoining the Yardein.