Numbers 10:10 New International Version (NIV)

¹⁰ Also at your times of rejoicing—your appointed festivals and New Moon feasts—you are to sound the trumpets over your burnt offerings and fellowship offerings, and they will be a memorial for you before your God. I am the Lord your God.”

Numbers 29:1-6 New International Version (NIV)

The Festival of Trumpets

29 “‘On the first day of the seventh month hold a sacred assembly and do no regular work. It is a day for you to sound the trumpets. ² As an aroma pleasing to the Lord, offer a burnt offering of one young bull, one ram and seven male lambs a year old, all without defect. ³ With the bull offer a grain offering of three-tenths of an ephah^[a] of the finest flour mixed with olive oil; with the ram, two-tenths^[b]; ⁴ and with each of the seven lambs, one-tenth.^{[c] 5} Include one male goat as a sin offering^[d] to make atonement for you. ⁶ These are in addition to the monthly and daily burnt offerings with their grain offerings and drink offerings as specified. They are food offerings presented to the Lord, a pleasing aroma.