Editor: Here is an article that explains why the Feast of Trumpets is called Rosh Hashanah(New Years) instead of the biblical Jewish name; Yom Teruah(Day of Shouting). I thought it to be an interesting study following the Feast of Trumpets.
On the 1st day of the Seventh Month (Tishrei) the Torah commands us to observe the holy day of Yom Teruah which means “Day of Shouting” (Leviticus 23:23-25; Numbers 29:1-6). Yom Teruah is a day of rest on which work is forbidden.
One of the unique things about Yom Teruah is that the Torah does not say what the purpose of this holy day is. The Torah gives at least one reason for all the other holy days and two reasons for some. The Feast of Matzot (Unleavened Bread) commemorates the Exodus from Egypt, but it is also a celebration of the beginning of the barley harvest (Exodus 23:15; Leviticus 23:4–14). The Feast of Shavuot (Weeks) is a celebration of the wheat harvest (Exodus 23:16; 34:22). Yom Ha-Kippurim is a national day of atonement as described in great detail in Leviticus 16. Finally, the Feast of Sukkot (Booths) commemorates the wandering of the Israelites in the desert and is also a celebration of the ingathering of agricultural produce (Exodus 23:16). In contrast to all these Torah festivals, Yom Teruah has no clear purpose other than that we are commended to rest on this day.
Nevertheless, the name of Yom Teruah provides a clue as to its purpose. Teruah literally means to make a loud noise. This word can describe the noise made by a trumpet but it also describes the noise made by a large gathering of people shouting in unison (Numbers 10:5–6). For example,
“And it shall come to pass when the ram’s horn makes a long blast, when you hear the sound of the shofar, the entire nation will shout a great shout, and the wall of the city shall fall in its place, and the people shall go up as one man against it.”
– Joshua 6:5
In this verse the word “shout” appears twice, once as the verb form of Teruah and a second time as the noun form of Teruah. Although this verse mentions the sound of the shofar (ram’s horn), the two instances of Teruah do not refer to the shofar. In fact, in this verse, Teruah refers to the shouting of the Israelites which was followed by the fall of the walls of Jericho.
Read the full Article here: https://www.nehemiaswall.com/yom-teruah-day-shouting-became-rosh-hashanah