Deuteronomy 34:2 Kabbalah

וְאֵת֙ כָּל־נַפְתָּלִ֔י וְאֶת־אֶ֥רֶץ אֶפְרַ֖יִם וּמְנַשֶּׁ֑ה וְאֵת֙ כָּל־אֶ֣רֶץ יְהוּדָ֔ה עַ֖ד הַיָּ֥ם הָאַחֲרֽוֹן׃

and all Naphtali, and the land of Ephraim and Manasseh, and all the land of Judah as far as the hinder sea;

Read kabbalistic (mystical) interpretation of Deuteronomy 34:2: and classical mystical sources.