וְהָאָ֗רֶץ לֹ֤א תִמָּכֵר֙ לִצְמִתֻ֔ת כִּי־לִ֖י הָאָ֑רֶץ כִּֽי־גֵרִ֧ים וְתוֹשָׁבִ֛ים אַתֶּ֖ם עִמָּדִֽי׃
And the land shall not be sold in perpetuity; for the land is Mine; for ye are strangers and settlers with Me.
Read kabbalistic (mystical) interpretation of Leviticus 25:23: and classical mystical sources.