Kabbalah su Proverbi 28:14

Rabbi Yehuda began the discussion with the verse, "Happy is the man who fears always, but he who hardens his heart shall fall into evil" (Mishlei 28:14). Happy are Yisrael, whom the Holy One, blessed be He, desires and to whom He gave the Torah of Truth with which to attain eternal life. For whoever is occupied with the study of the Torah receives supernal life from the Holy One, blessed be He, and is ushered into the life of the World to Come, as it is written, "for He is your life, and the length of your days" (Devarim 30:20), and, "and through this word you shall prolong your days" (Devarim 32:47) for it is life in this world and life in the World to Come.

Rabbi Shimon hugged and kissed him. Then Rabbi Pinchas came and kissed and blessed him. He then said: Certainly, the Holy One, blessed be He, has sent me here. This is that tiny ray of light that I was told shines in my house, and later on shall lighten up the entire world." Rabbi Elazar said: Certainly, fear should not be omitted from the precepts, especially from this one (love). So fear should be attached to it. How is it attached? Love brings good from one side. As it is explained: when the Holy One, blessed be He, gives a person riches and all goodness, length of life, children, and sustenance, then that person should arouse in himself fear. And he should be afraid of what the sin might bring upon him. Of this it is written, "Happy is the man that fears always" (Proverbs 28:14), because fear is now included with love.

This is how fear should be aroused - from the other aspect of harsh Judgment. Because once a person realizes that harsh Judgment prevails upon him, he shall arouse fear in himself and be afraid of his Master. Thus, he will not harden his heart. This is what is meant by the verse, "he that hardens his heart shall fall into evil" (Proverbs 28:14), which refers to the Other Side that is called 'evil'. Thus, fear is attached to and includes them both.