Halakha Nehemia 13:23: Mishneh Torah, Human Dispositions

He who rebukes a friend, at the beginning, no hard words should be used against him to shame him, for it is said: "And thou shalt bear no sin upon him" (Lev. 19.17). Thus did the wise men say: "Understand it not by rebuking him thou mayest cause his countenance to change expression; for, it is said: 'And thou shalt bear no sin upon him'" (Ibid.; Arakin, 16b); herefrom we learn that it is forbidden to put an Israelite to shame, needless to say publicly. Although he who does put his fellow to shame is not flogged, it is a grievous sin. Even so did the wise men say: "He who publicly puts his fellow's countenance to shame has no share in the world to come" (Pirke Abot, 3.11). A man is, therefore obliged to guard himself against putting his fellow to shame publicly, regardless of whether he be young or old; not to call him by a name of which he feels ashamed, nor tell aught in his presence of which he is ashamed. However, all these refer to matters touching the relationship between man and man; but if it concern heavenly matters, if the sinner does not repent after being rebuked privately, he should be shamed publicly, and his sin should be proclaimed, and harsh words should be used in his presence, and he should be shamed and cursed till he repent and take up the good path, even as all of the prophets in Israel did with the wicked.⁸Baba Mezi’a 59a; Yoma, 86b. C. G.