Likutei Moharan 4:5/ליקוטי מוהר"ן ד׳:ה׳

15 . And, a person’s iniquities are on his bones, as is written (Ezekiel 32:27), “and their iniquities will be etched upon their bones.” Each sin has its own combination of letters. When a person commits a particular sin, a negative letter-combination is etched upon his bones. This brings the spoken aspect of the prohibition which he has transgressed into the realm of impurity. In other words, he brings the aspect of Malkhut /< dabor> among the nations, giving them the power to rule.

2For example: If he transgressed the utterance of the prohibition “You shall have no [other gods besides Me]” (Exodus 20:3), then he destroys the utterance’s positive letter-combination and forms a negative letter-combination. This letter-combination is etched upon his bones,<in fulfillment of:> “It is your iniquities that have turned away these things” (Jeremiah 5:25). And it is written, “Evil is the deathblow of the wicked” (Psalms 34:22).

3By means of spoken confession, however, the letters disappear from the bones into which they have been etched and are transformed into the words of confession. For speech emanates from one’s bones, as is written (Psalms 35:10), “All my bones will say.” He tears down the negative structure and combination, and from [the letters] builds Malkhut d’Kedushah.

4This is what the Sages said: During the time the Israelites traveled in the desert, Yehudah’s bones rolled about [in his coffin] until Moshe said (Deuteronomy 33:7), “Hear, O God, the voice of Yehudah” (Sotah 7b). Moshe requested that the Holy One remember for Yehudah’s sake the confession he had made. And this is just what happened. Thus it was specifically “his bones rolled about,” as is written, “and their iniquities will be etched upon their bones.” But by means of the confession, they were rectified and each one went into its place.

5And Yehudah corresponds to Malkhut —an allusion that the aspect of Malkhut is rectified through spoken confession.

6This was accomplished with the aid of Moshe, who recalled the confession. For it is necessary that the confession take place in the presence of a Talmid Chakham. And every Torah scholar is an aspect of Moshe, <as the Talmud states:> “Moshe, you said it well” (Shabbat 101b). By Moshe’s mentioning the confession, it was considered as if [Yehudah] had now confessed <literally in his presence>. This caused the aspect of Malkhut to be rectified and the negative letter-combination, which had been etched upon [Yehudah’s] bones, to be torn down.