וְעַתָּ֗ה אִם־שָׁמ֤וֹעַ תִּשְׁמְעוּ֙ בְּקֹלִ֔י וּשְׁמַרְתֶּ֖ם אֶת־בְּרִיתִ֑י וִהְיִ֨יתֶם לִ֤י סְגֻלָּה֙ מִכָּל־הָ֣עַמִּ֔ים כִּי־לִ֖י כָּל־הָאָֽרֶץ׃
Kaya ngayon, kung tunay ninyong pakikinggan ang Aking tinig at iingatan ninyo ang Aking tipan, kayo ay magiging Aking natatanging kayamanan higit sa lahat ng mga bayan, sapagkat Akin ang buong lupa.
Sefer HaChinukh
It is from the roots of the commandment from the angle of the simple understanding that God, may He be blessed, wanted to inform His nation that everything is His; and in the end everything will return to those to whom He wanted to give it at first — for the earth is His, as it is written (Exodus 19:5), “for all the earth is Mine.” And with this commandment of the counting of forty-nine years, they will distance themselves from stealing land of their fellows and they will not covet it in their hearts; in that they know that everything returns to the one that God wishes it to be his.