Leviticus 23:23-24 “Again the Lord spoke to Moses saying, ‘Speak to the sons of Israel, saying, In the seventh month on the first day of the month you shall have a rest, a reminder by blowing of trumpets, a holy convocation.”
Today begins Rosh Hashanah, “the head of the year”. However, biblically speaking, the “Feast of Trumpets” has nothing to do with the beginning of the Jewish new year, as it is the first day of the seventh month.
Here is an interesting thing about the “Seven Feasts of Jehovah”. Passover, Feast of Unleavened Bread, First Fruits, and Pentecost are all spring “feasts”. Then comes the long summer and harvest time, which begins with the Feasts of: Trumpets, Atonement, and Tabernacles.
The “Feast of Trumpets” was known by the ancient Jewish people in the most amazing way as “The Day That No Man Knows”. This is because it is the only feast determined by sighting of the “New Moon”. Just as Jesus has fulfilled the four spring feasts (Passover, Unleavened Bread, First Fruits, and Pentecost), He will fulfill the last three feasts…very soon.