Bamidbar 34:2

ואת הארץ אשר תפול לכם וגו׳ THIS IS THE LAND THAT SHALL FALL TO YOU [FOR AN INHERITANCE] — Since many divine commandments have to be practised in the Land of Canaan and are not to be practised outside the Land, it (Scripture) feels compelled to describe the limiting lines of the boundaries of its sides all round, in order to tell you: from these boundaries and inward the divine commands have to be practised (cf. Gittin 8a). תפול לכם [THE LAND WHICH] FALLS FOR YOU — Because it (the land) had to be divided by lot (which is said to fall upon a person), the division is expressed by the term “falling”. — And a Midrashic explanation of why this term is employed here states: It is because the Holy One, blessed be He, cast down (more lit., made fall) from heaven the tutelary angels of the seven nations of Canaan and placed them in fetters before Moses, He said to him, (Deuteronomy 1:21) “Behold the Lord God hath put before thee the tutelary angels of the land” — there is no more strength in them (cf. Midrash Tanchuma, Masei 4 and Rashi on Deuteronomy 2:31).

צַ֞ו אֶת־בְּנֵ֤י יִשְׂרָאֵל֙ וְאָמַרְתָּ֣ אֲלֵהֶ֔ם כִּֽי־אַתֶּ֥ם בָּאִ֖ים אֶל־הָאָ֣רֶץ כְּנָ֑עַן זֹ֣את הָאָ֗רֶץ אֲשֶׁ֨ר תִּפֹּ֤ל לָכֶם֙ בְּֽנַחֲלָ֔ה אֶ֥רֶץ כְּנַ֖עַן לִגְבֻלֹתֶֽיהָ׃

Command the children of Yisra᾽el, and say to them, When you come into the land of Kena῾an; (this is the land that shall fall to you for an inheritance, the land of Kena῾an with its borders:)