From who did the Cohanim and the Levites descend from??

From who did the Cohanim and the Levites descend from??

………………“Here too you can see a consequence is stated:

14And the Lord’s wrath was kindled against Moses, and He said, “Is there not Aaron your brother, the Levite? I know that he will surely speak, and behold, he is coming forth toward you, and when he sees you, he will rejoice in his heart. ידוַיִּֽחַר־אַ֨ף יְהֹוָ֜ה בְּמשֶׁ֗ה וַיֹּ֨אמֶר֙ הֲלֹ֨א אַֽהֲרֹ֤ן אָחִ֨יךָ֙ הַלֵּוִ֔י יָדַ֕עְתִּי כִּֽי־דַבֵּ֥ר יְדַבֵּ֖ר ה֑וּא וְגַ֤ם הִנֵּה־הוּא֙ יֹצֵ֣א לִקְרָאתֶ֔ךָ וְרָֽאֲךָ֖ וְשָׂמַ֥ח בְּלִבּֽוֹ:

wrath was kindled: Rabbi Joshua ben Korchah says: In every [instance that God’s] kindling anger [is mentioned, i.e., that God’s anger was sparked] in the Torah, it is stated [that there was] a consequence [i.e., it was followed by a punishment]. In this [instance, however,] no consequence is stated, and we do not find that a punishment came [to Moses] after this kindling of anger. Rabbi Jose said to him, “Here too you can see a consequence is stated: [namely in the question] ‘Is there not Aaron your brother, the Levite,’ who was destined to be a Levite and not a priest [kohen]. I had said that the priesthood would emanate from you, henceforth it will not be so, but he [Aaron] will be a priest and you the Levite, as it is said: ‘But as for Moses, the man of God-his sons were to be called in the tribe of Levi’ (I Chron. 23:14).” -[from Zev. 102a]

ויחר אף: ר’ יהושע בן קרחה אומר כל חרון אף שבתורה נאמר בו רושם, וזה לא נאמר בו רושם, ולא מצינו שבא עונש על ידי אותו חרון. אמר לו רבי יוסי אף בזו נאמר בו רושם, הלא אהרן אחיך הלוי, שהיה עתיד להיות לוי ולא כהן, והכהונה הייתי אומר לצאת ממך, מעתה לא יהיה כן, אלא הוא יהיה כהן ואתה הלוי, שנאמר (דברי הימים א’ כג כד) ומשה איש הא-להים בניו יקראו על שבט הלוי:

and behold, he is coming forth toward you: when you go to Egypt.

הנה הוא יצא לקראתך: כשתלך למצרים:

and when he sees you, he will rejoice in his heart: Not as you think, that he will resent your attaining a high position. Because of this [Aaron’s goodness and humility], Aaron merited the ornament of the breastplate, which is placed over the heart (Exod. 28:29). — [from Exod. Rabbah 3:17]

וראך ושמח בלבו: לא כשאתה סבור שיהא מקפיד עליך שאתה עולה לגדולה. ומשם זכה אהרן לעדי החשן הנתון על הלב: