Musar zu Mischlej 12:21

It is a sign on behalf of all who pursue the way of awe that through this they receive special protection from the Creator to keep them from stumbling in iniquity, Heaven forbid. Thus it is written, “No wrong will befall the righteous” (Mishlei 12:21). Even when he sleeps the Holy One Blessed is He protects him from all mishap.

Let him remember all the troubles and misfortunes which surrounded him and occurred to him from the day of his birth, and that God saved him from all of them. Let him consider in his heart, whether he was saved from unnatural death, or whether he was surrendered unto the hands of his enemies and his God saved him, or whether he passed a dangerous place and he was spared. Or whether troubles and evil happenings befell all of his companions, while he was saved from all of them. Let him remember when he was sick and approached death, and the Creator brought his soul up from the pit. Let him remember if he was destitute and poor in his youth, and afterwards God gave to him wealth and riches, or if he was lowly and held in contempt by the people and yet arose to a great height. Let him remember if he had many debts, and the Creator gave him relief and bestowed gifts upon him from his own bounty until he paid his debts and came forth from the yoke of his distress. Similarly, he should reflect whether a decree of a king was ever issued against him that he be slain or punished, and God saved him, or whether he was taken captive or confined in jail and later released, or if he planned to commit a sin and the Creator saved him from doing that sin, as it is said (Proverbs 12:21), “There shall no mischief befall the righteous.” Let him consider whether he entreated God in time of trouble and was answered, and whether he prayed in his heart because he had enemies and his prayer was heard concerning those who sought to do him evil, and he saw that he was avenged or they fell into his power, and he repaid them with good in place of evil.