Leviticus 23:23–25 (ESV)
The Feast of Trumpets
23 And the Lord spoke to Moses, saying, 24 “Speak to the people of Israel, saying, In the seventh month, on the first day of the month, you shall observe a day of solemn rest, a memorial proclaimed with blast of trumpets, a holy convocation. 25 You shall not do any ordinary work, and you shall present a food offering to the Lord.”
The evening of September 20th, 2017 will mark the start of the high holy day of The Feast of Trumpets(Rosh Hashanah) which marks the start of the Jewish new year( Leviticus 23:23–25; Numbers 29:1). Ten days after the Feast of Trumpets is Yom Kippur also known as the Day of Atonement. It is believed according to Rabbinical tradition that Rosh Hashanah commemorates the day God created the universe, the day He created Adam and Eve, and this will mark the commencement of the Day of Judgment. This time of year is both a time for celebration and a time to worship and repent.
There are several traditions that are carried out during this time. For example Tashlich(the tossing of bread crumbs into a stream of running water) which symbolizes the words of Micah 7:19 that says God shall cast the sin's of the saints into the sea. Another prominent tradition is the blowing of the shofar on the first and second mornings of Rosh Hashanah, the blowing of the shofar(a type of trumpet) symbolizes the the start of a new year, the arrival of Messiah the King. The shofar is the horn of a ram and Rabbinal scholars say it reminds the observer of the ram God provided to Abraham for sacrifice in place of Isaac.
After the blowing of the shofar comes the morning reading of the Torah. On the first morning, the account of the birth of Isaac and the banishment of Ishmael is read out loud, on the second morning the account of Abraham almost sacrificing Isaac is read. There is so much meaning in this holiday but it is ashamed that so many people are ignorant of it or pay little mind.
The Bible tells us that The Messiah will descend to the earth accompanied by the blowing of a trumpet:
1 Thessalonians 4:16 (ESV)
16 For the Lord himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first.
The blowing of the shofar also reminds us of when Yahweh descended onto mount Sinai and appeared before all of Israel in the desert wilderness:
Exodus 19:16-17 (ESV)
16 On the morning of the third day there were thunders and lightnings and a thick cloud on the mountain and a very loud trumpet blast, so that all the people in the camp trembled. 17 Then Moses brought the people out of the camp to meet God, and they took their stand at the foot of the mountain.
The Bible also informs us that when the Messiah comes that the dead will be resurrected for the Day of Judgment:
Revelation 20:12 (ESV)
12 And I saw the dead, great and small, standing before the throne, and books were opened. Then another book was opened, which is the book of life. And the dead were judged by what was written in the books, according to what they had done.
The Bible further tells us after judgment is given there will be a time of celebration and a feasting for the sake of the Messiah called the Marriage Supper of the Lamb:
Revelation 19:6-9 (ESV)
The Marriage Supper of the Lamb
6 Then I heard what seemed to be the voice of a great multitude, like the roar of many waters and like the sound of mighty peals of thunder, crying out,
For the Lord our God
the Almighty reigns.
7 Let us rejoice and exult
and give him the glory,
for the marriage of the Lamb has come,
and his Bride has made herself ready;
8 it was granted her to clothe herself
with fine linen, bright and pure”—
for the fine linen is the righteous deeds of the saints.
9 And the angel said to me, “Write this: Blessed are those who are invited to the marriage supper of the Lamb.” And he said to me, “These are the true words of God.”
Furthermore, when we look back to the promise God made to Abraham that his wife who was past childbearing age would have a son(a birth miracle), we should be reminded of the ultimate promised seed the Messiah. In a similar manner the prophet Isaiah wrote that a virgin girl would bear a child(a birth miracle) and he would be called Immanuel which means "God with us". In what is called the Akedah or the binding of Isaac we find signs and shadows of the Messiah. After God gave Abraham and Sarah the child of promise God would see if Abraham would obey him even if he took the life of that child, Abraham had full assurance God would keep his promise even if he had to raise the son from the dead.
God put Abraham to the test and commanded him to take his unique son and go up a mount in the land of Moriah now known as the Temple mount(2 Chron 3:1) and offer him as a sacrifice. When Isaac saw the the wood used for burning the offering but no lamb he asked his father where was the lamb, Abraham answered:
Genesis 22:8 (ESV)
... “God will provide for himself the lamb for a burnt offering, my son.”
Greater then the son of Abraham is the promised unique Son of God who was offered up as a perfect sacrifice in the land of Moriah for all the sins of the world(John 3:16). In fact Messiah when he returns will place his feet down on the mount of Olives in the land of Moriah(Zach 14:4-5).
I could go on about this subject but this is enough to give the reader a taste of all the jewels in God's word, have a sweet Feast of Trumpets and watch for the sign of the Son of Man in the sky.