Charles Ellicott Commentary Leviticus 26:35

"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." — Leviticus 26:35 (ASV)

As long as it lies desolate it will rest; because it did not rest ... — Better, All the days of its desolation shall it keep that rest which it did not rest, etc., that is, the land during its desolation will not be cultivated but will lie fallow, and thus be enabled to make up by its long rest for the many sabbaths and sabbatical years of which it had been deprived by the lawless Israelites during their sojourn in it (2 Chronicles 36:21).