Hilchot Tshuva Chapter 1, Halacha 5

Sorry that I missed a few days, although it's 5 Elul and I'm up to Halacha 5, so I'm still on target.

This Halacha deals with the Scapegoat that was a central part of the Yom Kippur service in the Temple.

הִלְכּוֹת תְּשׁוּבָה פֵּרֶק א, הלכה ה

שָׂעִיר הַמִּשְׁתַּלֵּחַ--לְפִי שְׁהוּא כַּפָּרָה לְכָל יִשְׂרָאֵל, כּוֹהֵן גָּדוֹל מִתְוַדֶּה עָלָיו עַל לְשׁוֹן כָּל יִשְׂרָאֵל: שֶׁנֶּאֱמָר "וְהִתְוַדָּה עָלָיו אֶת-כָּל-עֲו‍ֹנֹת בְּנֵי יִשְׂרָאֵל" (ויקרא טז,כא).

Hilchot Tshuva, Chapter 1, Halacha 5

The “Scapegoat” – as it serves as an atonement for all the Jewish people, the Cohen Gadol confesses over it using a language for all Israel, as it is written: “And he shall confess over it for all the sins of the Children of Israel” (Vayikra 15:21)