The Feast of Trumpets
So David and all the house of Israel brought up the ark of the LORD with shouting, and with the sound of the trumpet (II Samuel 6:15).
Rosh Hashanah is also known as Yom Teruah—”The Day of the Sounding of the Shofar.”
A shofar is an instrument made primarily and ordinarily from the horn of a ram. The shofar of Rosh Hashanah could not be constructed of an artificial instrument. It had to be an instrument in its natural form and naturally hollow – the ram’s horn.
The sound of the shofar was used in ancient Israel to announce the Rosh Chodesh, “the head of the month”. Each month started with acts of worship and offerings of sacrifice. They put Yahweh at “the head of the month”.
The blowing of the shofar called upon God, gathered His people together and announced a change in seasons and strategies.
The shofar was always blown on Rosh Hashanah, declaring the end at the beginning of the New Year. It sounded upcoming blessings and breakthroughs..
It signifies the need to wake up to the call of God upon your life. God called Abraham to sacrifice. The portion read on the second day of Rosh Hashanah is always, “The Binding of Isaac” (Genesis 22). Abraham sacrifices a ram in place of his son, Isaac. The horn of the ram represents how God provided revelation, substitution and salvation through the sacrifice of His own choosing.