YOM TERUAH

Rosh HaShanah is known as Yom Teruah or the Day of the Awakening Shout. In Leviticus / Vayikra 23:24 it is written:

Leviticus 23:24 Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall you have a Sabbath, a memorial of blowing of trumpets, a holy convocation.