Musar su Levitico 19:17

The twentieth principle is to cause the many to repent from iniquity to the extent of one's ability - as it is stated (Ezekiel 18:30), "Repent and make repent from all your transgressions." We learn [from this] that it is from the principles of repentance. And it is stated (Leviticus 19:17), "you shall surely reprimand your countryman and not bear sin because of him." We learn [from this] that if he does not rebuke him, he will be punished for [the other's] sins. And King David, peace be upon him, said in the psalm of repentance (Psalms 51:15), "I will teach transgressors Your ways, that sinners may return to You."

And one should be very careful not to shame any man for the Sages said: "He who whitens (shames) the face of another in public has no portion in the world to come" (Baba Mezià 59a). To whiten another's face is like murder, for the red departs and the white comes (thus one is spilling the blood of the shamed one within him) (Ibid., 58b). And the Sage said further: The pain of shame is worse than death. A person should allow himself to be burnt alive and not shame his fellow in public. And they learned this from Tamar who, even though they brought her forth to be burned, did not want to shame Judah (Berakoth 43b). And even when you are required to rebuke another the Torah says: "You shall surely rebuke your neighbor and not bear sin because of him" (Lev. 19:17). How shall you rebuke? At first, secretly and gently. However if you rebuke him at the beginning in public and shame him, then you have sinned because of this, (Arakin 16b). And this is all the more true where one shames another where no rebuke is called for.

“You shall not hate your brother in your heart” (Leviticus 19:17). We were warned with this to remove the trait of hatred from our souls. And it is a trait that brings many sins and causes several foul plots - such as evil speech which corresponds to several [sins which are punished with] a death penalty from the court, as will be explained; and like seeking the bad, and joy in calamity, causing injuries to one’s fellow, talebearing, revenge and bearing a grudge. And it destroys much good for the soul, as will be explained in the Gate of Hatred (no longer extant). And see how far the punishment of hatred reaches: For our Rabbis, may their memory be blessed, said (Yoma 9b), “For what [reason] was the Second Temple destroyed, [even though] they were occupied with Torah [study] and good deeds? Because of the causeless hatred that was among them.”