כָּל־יְמֵ֥י הָשַּׁמָּ֖ה תִּשְׁבֹּ֑ת אֵ֣ת אֲשֶׁ֧ר לֹֽא־שָׁבְתָ֛ה בְּשַׁבְּתֹתֵיכֶ֖ם בְּשִׁבְתְּכֶ֥ם עָלֶֽיהָ׃
As long as it lieth desolate it shall have rest; even the rest which it had not in your sabbaths, when ye dwelt upon it.
Read kabbalistic (mystical) interpretation of Leviticus 26:35: and classical mystical sources.