Musar su Salmi 32:6

But if he lacks merit the Shechinah does not arrive early. Consequently, he endures great suffering as the soul separates from him until at last Hashem has mercy upon him and shines a little of the Shechinah’s light upon him so that it can depart. Nevertheless, this only happens after he has already endured terrible suffering. It is as if he were being slaughtered with a blemished knife. Meanwhile his intestines also convulse. Concerning this the Zohar warns in Parashas Va’eschanan that if a person gazes this way and that while praying, rather than directing his eyes downward, the Shechinah will not come to him early in order that he will experience the throes of death. It is written, “Concerning this should every pious man pray to You that it should be found when the time comes” (Tehillim 32:6). According to the Sages the “time” referred to in this verse is the moment of death (Berachos 8a). The thing that the pious man is to pray for is an easy death, free of suffering, and a clear mind so that he can confess his iniquities and issue last instructions to his children regarding how they should conduct themselves after his death. Let him urge them to go in the way of the innocent so that he will not suffer shame in the grave. It is a great privilege to die with a clear head enabling one to converse lucidly before one’s death. Not everyone merits this. While a person is still healthy let him pray that the Shechinah will come to him early enough to save him from a sudden or bizarre death or from extraordinary suffering.

When the righteous man hears these things he rejoices and accepts his death happily. It was in light of this that the rabbis incorporated into the Ma’amados for Monday the petition, “And take me out from peace to peace.” This is a prayer that one should merit the death of the righteous described above. For it is stated, “For this, let every man of devotion pray to You, in a time when You may be founds” (Tehillim 32:6). The Sages explain: “This is the day of death” (Berachos 8a). In other words, let him pray that bands and camps of holy and pure saints come to greet him so that he may go with them to be crowned among them in great joy and happiness. The verse continues, “…indeed, when mighty waters threaten, they will not reach him.” These are the “waters of the wicked” mentioned in Tehillim 124:5, that is, the bands of destroying and damaging angels, Heaven spare us, that prevent the soul of the evildoer from beholding the light of the Shechinah. But as for the soul of the righteous person, who can relate the honor he will enjoy?