“U’lekha Hashem HaChesed (Yours, O God, is lovingkindness), for You pay each man commensurate with his deeds.” (Psalms 62:13)

That is, it is a great lovingkindness from God that He repays man measure for measure. As a result, a person understands to search his deeds and know with which transgression he blemished, so that he can return in repentance.

But know! God’s repaying measure for measure is mainly in the Land of Israel. As it is written (Job 20:27), “Heaven will reveal his iniquity, and the land will rise up against him.” “The land” is the Land of Israel. She “will rise up against him” to repay him measure for measure. And there, “his iniquity” is revealed, for there they are exacting to “pay each man commensurate with his deeds,” measure for measure.

This is the meaning of that which is written about the Land of Israel (Numbers 13:32): “a land that okhelet (consumes) its inhabitants.” [“OKheLeT” is] an acrostic for “Atah T’shalem L’ ish K’maaseihu (You pay each man commensurate with his deeds),” as above.

This is why those who live in the Land of Israel for the most part experience hardships—because they are exacting there to “pay each man commensurate with his deeds.”