Nehemiah 8:2

8:2 So Ezra the priest brought the law before the assembly which included men and women and all those able to understand what they heard. (This happened on the first day of the seventh month.)

Leviticus 23:24

23:24 “Tell the Israelites, ‘In the seventh month, on the first day of the month, you must have a complete rest, a memorial announced by loud horn blasts, ¹  a holy assembly.

Numbers 29:1-6

Blowing Trumpets

29:1 “‘On the first day of the seventh month, you are to hold a holy assembly. You must not do your ordinary work, for it is a day of blowing trumpets for you. 29:2 You must offer a burnt offering as a sweet aroma to the Lord: one young bull, one ram, and seven lambs one year old without blemish.

29:3 “‘Their grain offering is to be of finely ground flour mixed with olive oil, three-tenths of an ephah for the bull, two-tenths of an ephah for the ram, 29:4 and one-tenth for each of the seven lambs, 29:5 with one male goat for a purification offering to make an atonement for you; 29:6 this is in addition to the monthly burnt offering and its grain offering, and the daily burnt offering with its grain offering and their drink offerings as prescribed, as a sweet aroma, a sacrifice made by fire to the Lord.

[23:24]  ¹ tn Heb “a memorial of loud blasts.” Although the term for “horn” does not occur here, allowing for the possibility that vocal “shouts” of acclamation are envisioned (see P. J. Budd, Leviticus [NCBC], 325), the “blast” of the shofar (a trumpet made from a ram’s “horn”) is most likely what is intended. On this occasion, the loud blasts on the horn announced the coming of the new year on the first day of the seventh month (see the explanations in J. E. Hartley, Leviticus [WBC], 387, and B. A. Levine, Leviticus [JPSTC], 160).