וַאֲחוֹתֵ֨ךְ הַגְּדוֹלָ֤ה שֹֽׁמְרוֹן֙ הִ֣יא וּבְנוֹתֶ֔יהָ הַיּוֹשֶׁ֖בֶת עַל־שְׂמֹאולֵ֑ךְ וַאֲחוֹתֵ֞ךְ הַקְּטַנָּ֣ה מִמֵּ֗ךְ הַיּוֹשֶׁ֙בֶת֙ מִֽימִינֵ֔ךְ סְדֹ֖ם וּבְנוֹתֶֽיהָ׃
你的姐姐是撒馬利亞，她和她的眾女兒住在你的左邊；你的妹妹是所多瑪，她和她的眾女兒住在你的右邊。
Rashi
at your left Since the territory of Judah was at the southern border of Eretz Israel [and one is considered facing east], all the other tribes were situated at their left [since they are north of Judah].