Exploring the Fall Holidays: Rosh Hashanah
וַיְדַבֵּ֥ר יְהֹוָ֖ה אֶל־מֹשֶׁ֥ה לֵּאמֹֽר׃ דַּבֵּ֛ר אֶל־בְּנֵ֥י יִשְׂרָאֵ֖ל לֵאמֹ֑ר בַּחֹ֨דֶשׁ הַשְּׁבִיעִ֜י בְּאֶחָ֣ד לַחֹ֗דֶשׁ יִהְיֶ֤ה לָכֶם֙ שַׁבָּת֔וֹן זִכְר֥וֹן תְּרוּעָ֖ה מִקְרָא־קֹֽדֶשׁ׃ כׇּל־מְלֶ֥אכֶת עֲבֹדָ֖ה לֹ֣א תַעֲשׂ֑וּ וְהִקְרַבְתֶּ֥ם אִשֶּׁ֖ה לַיהֹוָֽה׃ {ס}
YHWH spoke to Moshe, saying: Speak to the Children of Israel, saying:
In the seventh month, on [day] one of the month,
you are to have Sabbath-ceasing,
a reminder by [horn-]blasting, a proclamation of holiness. Any-kind of servile work you are not to do;
you are to bring near a fire-offering to YHWH.

Ibn Ezra’s commentary on the Tanakh was written c.1155 - c.1165 CE in France/Italy/England. His commentary is terse and aims to discover the pshat, the contextual meaning, of the text. Many view Ibn Ezra as the forefather of Biblical criticism.

בחדש השביעי. כי תחלת החשבון מניסן כי בו יצאנו ממצרים

IN THE SEVENTH MONTH. We begin the count of months from Nisan, for we then left Egypt.

וַיֹּ֤אמֶר יְהֹוָה֙ אֶל־מֹשֶׁ֣ה וְאֶֽל־אַהֲרֹ֔ן בְּאֶ֥רֶץ מִצְרַ֖יִם לֵאמֹֽר׃ הַחֹ֧דֶשׁ הַזֶּ֛ה לָכֶ֖ם רֹ֣אשׁ חֳדָשִׁ֑ים רִאשׁ֥וֹן הוּא֙ לָכֶ֔ם לְחׇדְשֵׁ֖י הַשָּׁנָֽה׃
YHWH said to Moshe and to Aharon in the land of Egypt, saying: Let this month be for you the beginning of months,
the beginning-one let it be for you of the months of the year.
וּבַחֹ֨דֶשׁ הַשְּׁבִיעִ֜י בְּאֶחָ֣ד לַחֹ֗דֶשׁ מִֽקְרָא־קֹ֙דֶשׁ֙ יִהְיֶ֣ה לָכֶ֔ם כׇּל־מְלֶ֥אכֶת עֲבֹדָ֖ה לֹ֣א תַעֲשׂ֑וּ י֥וֹם תְּרוּעָ֖ה יִהְיֶ֥ה לָכֶֽם׃ וַעֲשִׂיתֶ֨ם עֹלָ֜ה לְרֵ֤יחַ נִיחֹ֙חַ֙ לַֽיהֹוָ֔ה פַּ֧ר בֶּן־בָּקָ֛ר אֶחָ֖ד אַ֣יִל אֶחָ֑ד כְּבָשִׂ֧ים בְּנֵי־שָׁנָ֛ה שִׁבְעָ֖ה תְּמִימִֽם׃
And in the seventh month, on [day] one of the month,
a proclamation of holiness there is to be for you:
any-kind of servile work you are not to do.
A day of [horn-]blasts it is to be for you. You are to make an offering-up, as a soothing savor for YHWH:
one bull, a young of the herd, one ram,
lambs a year in age, seven, wholly-sound,

Nehemiah is one of the books of the section in the Hebrew Bible called Writings, and was originally included as part of the book of Ezra. It is mostly a first-person account of Nehemiah, a Jewish cup-bearer to the king of Persia who returns to Jerusalem in the 5th century BCE and becomes governor of Judah. Nehemiah helps repopulate Jerusalem, enforces the cancellation of debts, and assists Ezra in leading a religious revival. It was written c.450 - c.350 BCE.

וַיֵּאָסְפ֤וּ כׇל־הָעָם֙ כְּאִ֣ישׁ אֶחָ֔ד אֶל־הָ֣רְח֔וֹב אֲשֶׁ֖ר לִפְנֵ֣י שַֽׁעַר־הַמָּ֑יִם וַיֹּֽאמְרוּ֙ לְעֶזְרָ֣א הַסֹּפֵ֔ר לְהָבִ֗יא אֶת־סֵ֙פֶר֙ תּוֹרַ֣ת מֹשֶׁ֔ה אֲשֶׁר־צִוָּ֥ה יְהֹוָ֖ה אֶת־יִשְׂרָאֵֽל׃ וַיָּבִ֣יא עֶזְרָ֣א הַ֠כֹּהֵ֠ן אֶֽת־הַתּוֹרָ֞ה לִפְנֵ֤י הַקָּהָל֙ מֵאִ֣ישׁ וְעַד־אִשָּׁ֔ה וְכֹ֖ל מֵבִ֣ין לִשְׁמֹ֑עַ בְּי֥וֹם אֶחָ֖ד לַחֹ֥דֶשׁ הַשְּׁבִיעִֽי׃ וַיִּקְרָא־בוֹ֩ לִפְנֵ֨י הָרְח֜וֹב אֲשֶׁ֣ר ׀ לִפְנֵ֣י שַֽׁעַר־הַמַּ֗יִם מִן־הָאוֹר֙ עַד־מַחֲצִ֣ית הַיּ֔וֹם נֶ֛גֶד הָאֲנָשִׁ֥ים וְהַנָּשִׁ֖ים וְהַמְּבִינִ֑ים וְאׇזְנֵ֥י כׇל־הָעָ֖ם אֶל־סֵ֥פֶר הַתּוֹרָֽה׃ וַֽיַּעֲמֹ֞ד עֶזְרָ֣א הַסֹּפֵ֗ר עַֽל־מִגְדַּל־עֵץ֮ אֲשֶׁ֣ר עָשׂ֣וּ לַדָּבָר֒ וַיַּֽעֲמֹ֣ד אֶצְל֡וֹ מַתִּתְיָ֡ה וְשֶׁ֡מַע וַ֠עֲנָיָ֠ה וְאוּרִיָּ֧ה וְחִלְקִיָּ֛ה וּמַעֲשֵׂיָ֖ה עַל־יְמִינ֑וֹ וּמִשְּׂמֹאל֗וֹ פְּ֠דָיָ֠ה וּמִֽישָׁאֵ֧ל וּמַלְכִּיָּ֛ה וְחָשֻׁ֥ם וְחַשְׁבַּדָּ֖נָה זְכַרְיָ֥ה מְשֻׁלָּֽם׃ {פ}
וַיִּפְתַּ֨ח עֶזְרָ֤א הַסֵּ֙פֶר֙ לְעֵינֵ֣י כׇל־הָעָ֔ם כִּֽי־מֵעַ֥ל כׇּל־הָעָ֖ם הָיָ֑ה וּכְפִתְח֖וֹ עָֽמְד֥וּ כׇל־הָעָֽם׃ וַיְבָ֣רֶךְ עֶזְרָ֔א אֶת־יְהֹוָ֥ה הָאֱלֹהִ֖ים הַגָּד֑וֹל וַיַּֽעֲנ֨וּ כׇל־הָעָ֜ם אָמֵ֤ן ׀ אָמֵן֙ בְּמֹ֣עַל יְדֵיהֶ֔ם וַיִּקְּד֧וּ וַיִּֽשְׁתַּחֲו֛וּ לַיהֹוָ֖ה אַפַּ֥יִם אָֽרְצָה׃ וְיֵשׁ֡וּעַ וּבָנִ֡י וְשֵׁרֵ֥בְיָ֣ה ׀ יָמִ֡ין עַקּ֡וּב שַׁבְּתַ֣י ׀ הֽוֹדִיָּ֡ה מַעֲשֵׂיָ֡ה קְלִיטָ֣א עֲזַרְיָה֩ יוֹזָבָ֨ד חָנָ֤ן פְּלָאיָה֙ וְהַלְוִיִּ֔ם מְבִינִ֥ים אֶת־הָעָ֖ם לַתּוֹרָ֑ה וְהָעָ֖ם עַל־עׇמְדָֽם׃ וַֽיִּקְרְא֥וּ בַסֵּ֛פֶר בְּתוֹרַ֥ת הָאֱלֹהִ֖ים מְפֹרָ֑שׁ וְשׂ֣וֹם שֶׂ֔כֶל וַיָּבִ֖ינוּ בַּמִּקְרָֽא׃ {פ}
וַיֹּ֣אמֶר נְחֶמְיָ֣ה ה֣וּא הַתִּרְשָׁ֡תָא וְעֶזְרָ֣א הַכֹּהֵ֣ן ׀ הַסֹּפֵ֡ר וְהַלְוִיִּם֩ הַמְּבִינִ֨ים אֶת־הָעָ֜ם לְכׇל־הָעָ֗ם הַיּ֤וֹם קָדֹֽשׁ־הוּא֙ לַיהֹוָ֣ה אֱלֹהֵיכֶ֔ם אַל־תִּֽתְאַבְּל֖וּ וְאַל־תִּבְכּ֑וּ כִּ֤י בוֹכִים֙ כׇּל־הָעָ֔ם כְּשׇׁמְעָ֖ם אֶת־דִּבְרֵ֥י הַתּוֹרָֽה׃ וַיֹּ֣אמֶר לָהֶ֡ם לְכוּ֩ אִכְל֨וּ מַשְׁמַנִּ֜ים וּשְׁת֣וּ מַֽמְתַקִּ֗ים וְשִׁלְח֤וּ מָנוֹת֙ לְאֵ֣ין נָכ֣וֹן ל֔וֹ כִּֽי־קָד֥וֹשׁ הַיּ֖וֹם לַאֲדֹנֵ֑ינוּ וְאַל־תֵּ֣עָצֵ֔בוּ כִּֽי־חֶדְוַ֥ת יְהֹוָ֖ה הִ֥יא מָֽעֻזְּכֶֽם׃

the entire people assembled as one man in the square before the Water Gate, and they asked Ezra the scribe to bring the scroll of the Teaching of Moses with which the LORD had charged Israel. On the first day of the seventh month, Ezra the priest brought the Teaching before the congregation, men and women and all who could listen with understanding. He read from it, facing the square before the Water Gate, from the first light until midday, to the men and the women and those who could understand; the ears of all the people were given to the scroll of the Teaching. Ezra the scribe stood upon a wooden tower made for the purpose, and beside him stood Mattithiah, Shema, Anaiah, Uriah, Hilkiah, and Maaseiah at his right, and at his left Pedaiah, Mishael, Malchijah, Hashum, Hashbaddanah, Zechariah, Meshullam. Ezra opened the scroll in the sight of all the people, for he was above all the people; as he opened it, all the people stood up. Ezra blessed the LORD, the great God, and all the people answered, “Amen, Amen,” with hands upraised. Then they bowed their heads and prostrated themselves before the LORD with their faces to the ground. Jeshua, Bani, Sherebiah, Jamin, Akkub, Shabbethai, Hodiah, Maaseiah, Kelita, Azariah, Jozabad, Hanan, Pelaiah, and the Levites explained the Teaching to the people, while the people stood in their places. They read from the scroll of the Teaching of God, translating it and giving the sense; so they understood the reading. Nehemiah the Tirshatha, Ezra the priest and scribe, and the Levites who were explaining to the people said to all the people, “This day is holy to the LORD your God: you must not mourn or weep,” for all the people were weeping as they listened to the words of the Teaching. He further said to them, “Go, eat choice foods and drink sweet drinks and send portions to whoever has nothing prepared, for the day is holy to our Lord. Do not be sad, for your rejoicing in the LORD is the source of your strength.”

Tractate Rosh Hashanah, written c.190 - c.230 CE, is part of the Mishnah. The bulk of the tractate's discussion is elaboration of the laws concerning the holiday of Rosh Hashanah, its religious significance, and the details of the sounding of the shofar.

אַרְבָּעָה רָאשֵׁי שָׁנִים הֵם. בְּאֶחָד בְּנִיסָן רֹאשׁ הַשָּׁנָה לַמְּלָכִים וְלָרְגָלִים. בְּאֶחָד בֶּאֱלוּל רֹאשׁ הַשָּׁנָה לְמַעְשַׂר בְּהֵמָה. רַבִּי אֶלְעָזָר וְרַבִּי שִׁמְעוֹן אוֹמְרִים, בְּאֶחָד בְּתִשְׁרֵי. בְּאֶחָד בְּתִשְׁרֵי רֹאשׁ הַשָּׁנָה לַשָּׁנִים וְלַשְּׁמִטִּין וְלַיּוֹבְלוֹת, לַנְּטִיעָה וְלַיְרָקוֹת. בְּאֶחָד בִּשְׁבָט, רֹאשׁ הַשָּׁנָה לָאִילָן, כְּדִבְרֵי בֵית שַׁמַּאי. בֵּית הִלֵּל אוֹמְרִים, בַּחֲמִשָּׁה עָשָׂר בּוֹ:
The four new years are: On the first of Nisan, the new year for the kings and for the festivals; On the first of Elul, the new year for the tithing of animals; Rabbi Eliezer and Rabbi Shimon say, on the first of Tishrei. On the first of Tishrei, the new year for years, for the Sabbatical years and for the Jubilee years and for the planting and for the vegetables. On the first of Shevat, the new year for the trees according to the words of the House of Shammai; The House of Hillel says, on the fifteenth thereof.
בְּאַרְבָּעָה פְרָקִים הָעוֹלָם נִדּוֹן, בְּפֶסַח עַל הַתְּבוּאָה, בַּעֲצֶרֶת עַל פֵּרוֹת הָאִילָן, בְּרֹאשׁ הַשָּׁנָה כָּל בָּאֵי הָעוֹלָם עוֹבְרִין לְפָנָיו כִּבְנֵי מָרוֹן, שֶׁנֶּאֱמַר (תהלים לג) הַיּוֹצֵר יַחַד לִבָּם, הַמֵּבִין אֶל כָּל מַעֲשֵׂיהֶם. וּבֶחָג נִדּוֹנִין עַל הַמָּיִם:
At four times the world is judged: On Pesach, for the crops. On Shavuot, for the fruits of the tree. On Rosh Hashnah, all the world passes before Him like sheep, as it says, "He that fashioneth the hearts of them all, that considereth all their doings." (Psalms 33:15) And on Sukkot, they are judged for the water.

רַבִּי אֱלִיעֶזֶר אוֹמֵר: בְּתִשְׁרִי נִבְרָא הָעוֹלָם, בְּתִשְׁרִי נוֹלְדוּ אָבוֹת, בְּתִשְׁרִי מֵתוּ אָבוֹת, בַּפֶּסַח נוֹלַד יִצְחָק, בְּרֹאשׁ הַשָּׁנָה נִפְקְדָה שָׂרָה רָחֵל וְחַנָּה, בְּרֹאשׁ הַשָּׁנָה יָצָא יוֹסֵף מִבֵּית הָאֲסוּרִין.

Rabbi Eliezer says: In Tishrei the world was created; in Tishrei the Patriarchs were born; in Tishrei the Patriarchs died; on Passover Isaac was born; on Rosh HaShana Sarah, Rachel, and Hannah were remembered by God and conceived; on Rosh HaShana Joseph came out from prison;

בְּרֹאשׁ הַשָּׁנָה בָּטְלָה עֲבוֹדָה מֵאֲבוֹתֵינוּ בְּמִצְרַיִם, בְּנִיסָן נִגְאֲלוּ, בְּתִשְׁרִי עֲתִידִין לִיגָּאֵל.

on Rosh HaShana our forefathers’ slavery in Egypt ceased; in Nisan the Jewish people were redeemed from Egypt; and in Tishrei in the future the Jewish people will be redeemed in the final redemption with the coming of the Messiah.

The Sefer HaChinukh (“Book of Education”) is an anonymous work written in 13th-century Spain that clearly details the 613 commandments and explains the reasons behind them. In his introduction, the author explains that he wrote the book to “awaken the hearts'' of his teenage son and his peers, hoping to foster in them a sense of connection to the commandments. For each commandment, the author cites a biblical source, addresses the philosophical underpinnings of the commandment, presents a brief overview of the details of its observance, and summarizes the commandment’s applicability.

מצות שופר בראש השנה - שנצטוינו לשמע קול שופר ביום ראשון של תשרי שהוא ראש השנה, וכדתנן במסכת ראש השנה (ב, א) באחד בתשרי ראש השנה לשנים, שנאמר (במדבר כט א) יום תרועה יהיה לכם, ואף על פי שאין כאן זכר לתרועה זו אם בשופר, או במצלתים, או בכל שאר כלי נגון מפי השמועה למדו זכרונם לברכה (ר''ה לג, ב) שהיא בשופר כמו שמצינו ביובל שנאמר בו (ויקרא כה ט) שופר.
The commandment of shofar (horn) on Rosh Hashanah: That we were commanded to hear the sound of the shofar on the first day of Tishrei, which is Rosh Hashanah - and as we learn in Tractate Rosh Hashanah 2a, "On the first of Tishrei is the beginning of the year (rosh hashanah) for [calculating] years" - as it is stated (Numbers 29:1), "a day of blowing shall it be for you." And even though there is no mention of [how] this blast [should be done], if with a shofar, or with cymbals, or with any other musical instrument; they, may their memory be blessed, learned from [the oral tradition] (Rosh Hashanah 33b) that it is with a shofar, as we found with regard to the jubilee year, about which it states (Leviticus 25:9), "shofar."
וְהַֽעֲבַרְתָּ֞ שׁוֹפַ֤ר תְּרוּעָה֙ בַּחֹ֣דֶשׁ הַשְּׁבִעִ֔י בֶּעָשׂ֖וֹר לַחֹ֑דֶשׁ בְּיוֹם֙ הַכִּפֻּרִ֔ים תַּעֲבִ֥ירוּ שׁוֹפָ֖ר בְּכׇל־אַרְצְכֶֽם׃
Then you are to give-forth a blast [on the] shofar;
in the seventh month, on the tenth of the month, on the Day of Atonement,
you are to give[-blast on the] shofar throughout all your land.

The Mishneh Torah (“Repetition of the Torah”) is a monumental legal code written by the Rambam in Egypt. It is one of the most organized, comprehensive, and influential works of Jewish law. Written over a period of ten years (c.1176 - c.1178 CE), the work systematically categorizes and clearly explains all aspects of Jewish observance, including those applicable only in Temple times.

(ד) אַף עַל פִּי שֶׁתְּקִיעַת שׁוֹפָר בְּרֹאשׁ הַשָּׁנָה גְּזֵרַת הַכָּתוּב רֶמֶז יֵשׁ בּוֹ כְּלוֹמַר עוּרוּ יְשֵׁנִים מִשְּׁנַתְכֶם וְנִרְדָּמִים הָקִיצוּ מִתַּרְדֵּמַתְכֶם וְחַפְּשׂוּ בְּמַעֲשֵׂיכֶם וְחִזְרוּ בִּתְשׁוּבָה וְזִכְרוּ בּוֹרַאֲכֶם. אֵלּוּ הַשּׁוֹכְחִים אֶת הָאֱמֶת בְּהַבְלֵי הַזְּמַן וְשׁוֹגִים כָּל שְׁנָתָם בְּהֶבֶל וָרִיק אֲשֶׁר לֹא יוֹעִיל וְלֹא יַצִּיל, הַבִּיטוּ לְנַפְשׁוֹתֵיכֶם וְהֵיטִיבוּ דַּרְכֵיכֶם וּמַעַלְלֵיכֶם וְיַעֲזֹב כָּל אֶחָד מִכֶּם דַּרְכּוֹ הָרָעָה וּמַחֲשַׁבְתּוֹ אֲשֶׁר לֹא טוֹבָה.

(4) Even though the blowing of the shofar on Rosh HaShanah is a Biblical decree, it hints at something, i.e., “Wake up, sleepers, from your sleep! And slumberers, arise from your slumber! Search your ways and return in teshuvah and remember your Creator! Those who forget the Truth amidst the futility of the moment and are infatuated all their years with vanity and nothingness that will not help and will not save, examine your souls and improve your ways and your motivations! Let each of you abandon his wicked ways, and his thoughts which are no good."