49. Rabbi Yosi said, Yisrael will recite a complete poem, a poem including all other songs. This is the meaning of, "O give thanks to Hashem; call upon His name. Make known His deeds among the people" (Tehilim 105:1). Of that time it is written, "on that day Hashem shall be one, and His Name One" (Zacharia 14:9), and, "Then was our mouth filled with laughter, and our tongue with singing. Then they said among the nations, Hashem has done great things for them" (Tehilim 126:2).
49. א"ר יוֹסֵי, זְמִינִין יִשְׂרָאֵל לְמֵימַר שִׁירָתָא שְׁלֵימָתָא. שִׁירָתָא דְּכָלִיל כָּל שְׁאַר שִׁירִין. הה"ד, וַאֲמַרְתֶּם בַּיּוֹם הַהוּא הוֹדוּ לַה' קִרְאוּ בִשְׁמוֹ הוֹדִיעוּ בָעַמִּים עֲלִילוֹתָיו. בְּהַהוּא זִמְנָא כְּתִיב, וְהָיָה יְיָ' לְמֶלֶךְ עַל כָּל הָאָרֶץ בַּיוֹם הַהוּא יִהְיֶה יְיָ' אֶחָד וּשְׁמוֹ אֶחָד. וּכְתִיב אָז יִמָּלֵא שְׂחוֹק פִּינוּ וּלְשׁוֹנֵנוּ רִנָּה, אָז יֺאמְרוּ בַגּוֹיִם הִגְדִּיל יְיָ' לַעֲשׂוֹת עִם אֵלֶּה.