Musar su Salmi 92:7

And there are times when the merit of someone who is liable for excision lasts him two or three generations. And the delay in the death of evildoers is to pay their reward in this world, and so to destroy them in the world to come. For it is stated (Deuteronomy 7:10) “But who instantly repays with destruction those who hate Him - never slow with those who hate Him, but repaying them instantly.” And the thing is explained in the words of King David, peace be upon him (Psalms 92:7-8), “A brutish man cannot know, a fool cannot understand this: Though the wicked sprout like grass, though all evildoers blossom, it is only that they may be destroyed forever.” And likewise did Asaf, peace be upon him, say (Psalms 73:3-17), “For I envied the wanton; I saw the wicked at ease. Death has no pangs for them, etc. Until I entered God’s sanctuary and reflected on their fate.” Its explanation is that vengeance upon the evildoers is at their end, as it is stated (Proverbs 24:20), “For there is no future for the evil man; the lamp of the wicked goes out.”

Our Sages said further : "He who loses his temper, even the Divine Presence, is unimportant in His eyes (Nedarim 22b), as it is written "The wicked in the pride of his countenance (saith) 'He will not require', All his thoughts are 'There is no God' " (Ps. 10:4). And it (anger) also causes him to forget his studies of Torah and increases his folly as it is said : "For anger resteth in the bosom of fools" (Eccl. 7:9) and "A fool will not understand" (Ps. 92:7), and, "But a fool unfoldeth folly" (Prov. 13:16). You may be sure that his sins are more plentiful than his merits, as it is said : "An angry man stirreth up strife" (Ibid. 29:22) and his punishment is very great as it is said : "A man of great wrath shall suffer punishment" (Ibid. 19:19).

On another occasion Rabbi Aba was on his way to see Rabbi Shimon ben Yochai when he came to the town of that fellow Elazar. He found him sitting and expounding the verse, “A empty-headed man cannot know, nor does a fool cannot this” (Tehillim 92:7): “How foolish are the people of the world that neither take to heart nor know nor contemplate the ways of the Holy One Blessed is He to learn why it is that they are upon this earth! What is preventing them from discovering the ways of the Holy One Blessed is He? It is the foolishness of their hearts that prevents them from studying Torah. For if they would only study in order to learn the ways of the Holy One Blessed is He, they would know. “This is the meaning of the words, ‘A empty-headed man cannot know.’ That is, he does not know to engage in study. ‘Nor does a fool understand this.’ That is, he cannot understand the ways of the Shechinah, which is called ‘this’ (zos), as it is written, ‘With this [zos] Aharon shall enter the sacred precinct’ (Vayikra 16:3).”