פּירוש אויף דברים 10:9

עַל־כֵּ֞ן לֹֽא־הָיָ֧ה לְלֵוִ֛י חֵ֥לֶק וְנַחֲלָ֖ה עִם־אֶחָ֑יו יְהוָה֙ ה֣וּא נַחֲלָת֔וֹ כַּאֲשֶׁ֥ר דִּבֶּ֛ר יְהוָ֥ה אֱלֹהֶ֖יךָ לֽוֹ׃

דרום האָט דער לֵוִי ניט געקריגן קײן חלק און קײן נחלה מיט זײַנע ברידער; גאָט איז זײַן נחלה, אַזױ װי ה׳ דײַן גאָט האָט אים צוגעזאָגט. –

Rashi

על כן לא היה ללוי חלק WHEREFORE LEVI HATH NO PORTION — because they have been singled out for the service of the altar (v. 8), and therefore were not free to plough and sow.
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Ramban

WHEREFORE LEVI HATH NO PORTION. The purport thereof is234In view of the fact that Ramban explained the preceding verse as referring only to the priests, the question arises: why does the verse before us explain that the Levites have no portion in the Land, when only the priests were discussed in this section? Ramban answers, “The purport thereof is etc.” that because they all [i.e., the Levites] minister to and assist the priests in their [Divine] Service, since every part of the Sanctuary pertained to the offerings, [therefore, the whole tribe of Levi was not free to devote itself to the cultivation and development of the Land; therefore they received no portion therein]. And so He said [to Aaron], And thy brethren also of the tribe of Levi, the tribe of thy father, bring thou near with thee, that they may be joined unto thee, and minister unto thee.235Numbers 18:2.
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Ibn Ezra

God is their allotment along the lines of “God is the portion of my inheritance, and of my cup” [Psalms 16: 5] — meaning, service of God through the study of His ways.
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Rashi

ה' הוא נחלתו THE LORD IS HIS INHERITANCE — he receives his daily fare ready for him from the King’s house (from the Temple; the dues from the sacrifices, etc.).
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