Tossefta sur Le Lévitique 16:21

וְסָמַ֨ךְ אַהֲרֹ֜ן אֶת־שְׁתֵּ֣י ידו [יָדָ֗יו] עַ֨ל רֹ֣אשׁ הַשָּׂעִיר֮ הַחַי֒ וְהִתְוַדָּ֣ה עָלָ֗יו אֶת־כָּל־עֲוֺנֹת֙ בְּנֵ֣י יִשְׂרָאֵ֔ל וְאֶת־כָּל־פִּשְׁעֵיהֶ֖ם לְכָל־חַטֹּאתָ֑ם וְנָתַ֤ן אֹתָם֙ עַל־רֹ֣אשׁ הַשָּׂעִ֔יר וְשִׁלַּ֛ח בְּיַד־אִ֥ישׁ עִתִּ֖י הַמִּדְבָּֽרָה׃

Aaron appuiera ses deux mains sur la tête du bouc vivant; confessera, dans cette posture, toutes les iniquités des enfants d’Israël, toutes leurs offenses et tous leurs péchés, et, les ayant ainsi fait passer sur la tête du bouc, l’enverra, sous la conduite d’un exprès, dans le désert.

Tosefta Yoma

How does [the High Priest] confess? He says, "Please, Hashem, I have done wrong, I have transgressed, I have sinned before You -- I and my house. Please, Hashem, grant atonement please on the wrongdoings, and on the transgressions, and on the sins that I have wronged, and that I have transgressed, and that I have sinned before You -- I and my house, as it is written in the Torah of Moses Your servant (Lev. 16:30), 'Because on this day He will grant atonement upon you, etc.,' and it says (Lev. 16:21), "And he (i.e., Aaron) shall confess over [the goat that is sent away] all the wrongdoings of the Children of Israel, and all of their transgressions, for all of their sins." [These are] the words of Rabbi Meir. And the Sages say, "wrongdoings" -- these are willful acts; "transgressions" -- these are rebellious acts; "sins" -- these are unintentional acts, for after he confesses on the willful acts and on the rebellious acts, he returns and confesses on the unintentional acts. Rather, how does he confess [according to the Sages]? "Please, Hashem, I have sinned, I have done wrong, I have transgressed before You. Please, Hashem, grant atonement please, for the sins, for the wrongdoings, and for the transgressions that I have sinned, and that I have done wrong, and that I have transgressed before You -- I and my house, as it is written in the Torah of Moses Your servant, 'Because on this day He will grant atonement upon you to purify you, etc.'" And they (i.e., the congregants) answer him, "Blessed be the glorious Name, etc.," for this is the manner in which we find all the confessions of David [were performed], [for] it says (Ps. 106:6), "We have sinned like our fathers [before us], we have done wrong, and we have done evil." [And] Solomon says (1 Kings 8:47), "We have sinned, we have done wrong, we have done evil." [And] Daniel says (Dan. 9:5), "We have sinned, and we have done wrong, and we have done evil, and we have rebelled.” However, what is it that Moses says? [He says,] "He forgives wrongdoing and transgression and sin, and cleanses" (Ex. 34:7). Nevertheless, this is how the confession was done -- "I have sinned, and I have done wrong, and I have transgressed before You."