Leviticus 23:24. In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, a holy convocation.
This festival, commonly called the “Feast of Trumpets,” is universally regarded by the Jews as the Festival of the New Year, which began with the seventh month, Tisri. As it occurred at the new moon, and on the first day of the month in which the Great Day of Atonement and the Feast of Tabernacles took place, it was an occasion of great interest. It has always been observed by the Jews as connected with the Day of Atonement, and the ten days between the two are considered days of preparation for the solemn day. The silver trumpets, which were ordered to be prepared for the purpose of calling the people together (Num. 10:1-10) were blown on this day more than at other times, because the new year and the new month began together. Hence the name by which the feast is commonly called.
The day was kept as a Sabbath, no work being performed. The usual daily morning sacrifice was offered, then the monthly sacrifice of the new moon, and then the sacrifice peculiar to the day, which consisted of a bullock, a ram, and seven lambs for a burnt offering, and a kid for a sin offering (Num. 29:1-6).