Mentioned in the Tanach (Hebrew for Bible) over 70 times, the Shofar is used powerfully as an instrument of God in accomplishing His purpose.
Joel 2:1 Blow the trumpet in Zion, And sound an alarm in My holy mountain! Let all the inhabitants of the land tremble; For the day of the LORD is coming, For it is at hand:
The size of the large Yemenite Shofar is between 38-44 inches (96-111cm) long, around the edge of the shofar, and has a polished finish Made from a Kudu horn.