וְאִם־תֵּֽלְכ֤וּ עִמִּי֙ קֶ֔רִי וְלֹ֥א תֹאב֖וּ לִשְׁמֹ֣עַֽ לִ֑י וְיָסַפְתִּ֤י עֲלֵיכֶם֙ מַכָּ֔ה שֶׁ֖בַע כְּחַטֹּאתֵיכֶֽם׃
E será em vão o vosso poder, e a vossa terra não dará a sua produção, e a árvore da terra não dará o seu fruto.
Tzava'at HaRivash
The mnemonic by which to remember this, is the verse,31Ecclesiastes 8:5 “He who guards-Shomer-שומר the mitzvah will know no evil.” In other words, whoever accepts this matter upon himself, must stand guard at his post from morning to evening, awaiting the opportunity to fulfill any mitzvah that comes his way. That is, the term guard-Shomer-שומר is of the same root used in the verse,32Genesis 37:11 “His father waited in anticipation-Shamar-שמר of the matter.”33Rashi to Genesis 37:11 Through this, one merits that, “He will know no evil.” That is, he will not be subject to random happenstance (Keri-קרי)34Leviticus 26:21 & Rashi there; Also see Ginat Egoz of Rabbi Yosef Gikatilla, translated as HaShem Is One, Volume 2, pg. 353. which is called evil, God forbid.
Tzava'at HaRivash
In contrast, if a person relates to HaShem by way of happenstance, then HaShem likewise relates to him through happenstance.52Leviticus 26:21 & Rashi there; Also see Ginat Egoz of Rabbi Yosef Gikatilla, translated as HaShem Is One, Volume 2, pg. 353. Moreover, HaShem does not arrange garments and sustenance for him that contain those sparks of Godliness that relate to the root of his soul, so that he may rectify them.