לַ֭שְׁמִעַ בְּק֣וֹל תּוֹדָ֑ה וּ֝לְסַפֵּ֗ר כָּל־נִפְלְאוֹתֶֽיךָ׃
pour faire entendre des accents de reconnaissance, et proclamer toutes tes merveilles!
Mishnah Rosh Hashanah
Originally they used to light torches [to signal that the new month had been decreed]. When the Samaritans disrupted this, they decreed that messengers should go out.