The Miraglim’s Sin Wasn’t Loshon Harah
The problem with this Rashi is that the miraglim’s sin had nothing to do with loshon harah; it emanated from a lack of trust in HASHEM. When they entered the land, they saw giants occupying fortified cities. They witnessed people dying left, right, and center. In their minds, if the Jewish nation attempted to conquer this land, they would be slaughtered wholesale – man, woman, and child.
Clearly, they were lacking in bitachon. Their faith in HASHEM was deficient. But they weren’t guilty of speaking loshon harah. First off, there is no prohibition against speaking loshon harah about land. Land is inanimate. We are forbidden from derogatory speech about people – not rocks.
Of even greater significance, once the miraglim made their mistake and concluded that HASHEM wasn’t powerful enough to bring us into the land, what they then spoke wasn’t loshon harah at all. In their calculation, they were saving the Jewish people from utter destruction, in which case it wasn’t forbidden speech; it was a mitzvah.