Rosh Hashanah
Rosh Hashanah and the shofar
The shofar calls Israel to wake up and return to God. Its ram's horn recalls the ram given in Isaac's place.
Rosh Hashanah is the "day of blowing" (Numbers 29:1). The Torah reading is the binding of Isaac (Genesis 22), and the shofar recalls the ram God provided.
Its call is to teshuvah, returning to God, in the Days of Awe before Yom Kippur.
The New Covenant speaks of a final trumpet when the dead are raised (1 Corinthians 15:52), and of the Messiah as the Lamb God provided (John 1:29).
In the Scriptures
1וּבַחֹ֨דֶשׁ הַשְּׁבִיעִ֜י בְּאֶחָ֣ד לַחֹ֗דֶשׁ מִֽקְרָא־קֹ֨דֶשׁ֙ יִהְיֶ֣ה לָכֶ֔ם כָּל־מְלֶ֥אכֶת עֲבֹדָ֖ה לֹ֣א תַעֲשׂ֑וּ י֥וֹם תְּרוּעָ֖ה יִהְיֶ֥ה לָכֶֽם׃
1And in the seventh month, on the first day of the month, ye shall have a holy convocation: ye shall do no manner of servile work; it is a day of blowing the horn unto you.
Numbers 29:1 (Hebrew & JPS 1917)
13וַיִּשָּׂ֨א אַבְרָהָ֜ם אֶת־עֵינָ֗יו וַיַּרְא֙ וְהִנֵּה־אַ֔יִל אַחַ֕ר נֶאֱחַ֥ז בַּסְּבַ֖ךְ בְּקַרְנָ֑יו וַיֵּ֤לֶךְ אַבְרָהָם֙ וַיִּקַּ֣ח אֶת־הָאַ֔יִל וַיַּעֲלֵ֥הוּ לְעֹלָ֖ה תַּ֥חַת בְּנֽוֹ׃
13And Abraham lifted up his eyes, and looked, and behold behind him a ram caught in the thicket by his horns. And Abraham went and took the ram, and offered him up for a burnt-offering in the stead of his son.
Genesis 22:13 (Hebrew & JPS 1917)
52in a moment, in the twinkling of an eye, at the last shofar. For the shofar will sound and the dead will be raised incorruptible, and we will be changed.
1 Corinthians 15:52 (WMB)