וְיָצָ֨א הַגְּב֜וּל אֶל־כֶּ֣תֶף עֶקְרוֹן֮ צָפוֹנָה֒ וְתָאַ֤ר הַגְּבוּל֙ שִׁכְּר֔וֹנָה וְעָבַ֥ר הַר־הַֽבַּעֲלָ֖ה וְיָצָ֣א יַבְנְאֵ֑ל וְהָי֛וּ תֹּצְא֥וֹת הַגְּב֖וּל יָֽמָּה׃
And the border went out unto the side of Ekron northward; and the border was drawn to Shikkeron, and passed along to mount Baalah, and went out at Jabneel; and the goings out of the border were at the sea.
Rashi on Joshua
The boundary went out— Referring to the end of the boundary.
Rashi on Joshua
Toward the sea. Referring to the Great Sea [the Mediteranean] which is the western boundary [of Eretz Yisroel].