#yomteruah is to be a "memorial of trumpets/shouting", but why? What are we supposed to remember?

Trumpets and shouting mark a number of events in the Bible:
1-Call to repentance.
2-Call to war.
3-Warning of danger.
4-Victory in war.
5-Arrival of a king.
6-Arrival of the Ark.
7-The Voice of God.
8-Feasts & celebrations.
9-Corporate worship.

When you read about the "final trumpet", think of Yom Teruah and remember the King.

http://www.americantorah.com/2....017/09/26/remember-t