Musar su Deuteronomio 8:16

And one who trusts God should hold on during the vision of his distress; for the darkness will be the cause for the light - as it is written (Micah 7:8), "Do not rejoice over me, O my enemy; since I have fallen, I rise again; since I sit in darkness, the Lord is my light." And our Rabbis, may their memory be blessed, said (Midrash Tehillim 22), "If I had not fallen, I would not have risen; If I had not sat in darkness, the Lord would not have been my light." And every single person on the day of his trouble should put into his heart to understand and afflict himself, [together] with the repentance and prayer - just like the community is obligated to fast and afflict themselves at the time of their trouble, as the Sages, may their memory be blessed, ordained. And that fast day is chosen and is a day of acceptance. And when the rebuke of God, may He be blessed, comes to a man that is pure and straight, it becomes a test, and enhances his reward in the world to come - as it is stated (Deuteronomy 8:16), "in order to test you by hardships only to benefit you in the end." And our Rabbis, may their memory be blessed, said (Berakhot 5a), "[If] one searched his deeds at the time of his trouble, sought out and investigated, but did not find a sin - these are certainly afflictions of love."