이사야 58:5의 Musar

When sufferings of chastisement come upon a person, he returns to the good. As the sages interpreted the Song of Songs, "Behold, you are beautiful, my beloved, and pleasant" - even when You bring upon me sufferings of chastisement, it is pleasant. Why? Because You return me thus to the good. Human repentance is never complete without suffering. Repentance is improving one's actions and character. It is not fasting and wearing sackcloth and wallowing in the dust and immersing in water while remaining soiled on the inside with sins and evil thoughts. And so said the prophet (Isaiah 58): "Do you call that a fast, A day when the LORD is favorable?" "No, this is the fast I desire: To unlock fetters of wickedness, And untie the cords of the yoke." [...] The intent of the Torah is that one should first cleanse oneself on the inside, casting out from one's heart the impurities of sin, and then return what one has taken unfairly or by violence, and ask forgiveness from one's friend. After immersing one's heart inwardly and doing all kinds of purification and cleansing oneself from sin, one should purify oneself also outwardly by fasting and immersing the body, and so on...