Numbers 10:8-10

Young's Literal Translation

⁸ and sons of Aaron, the priests, blow with the trumpets; and they have been to you for a statute age-during to your generations.

⁹ `And when ye go into battle in your land against the adversary who is distressing you, then ye have shouted with the trumpets, and ye have been remembered before Jehovah your God, and ye have been saved from your enemies.

¹⁰ `And in the day of your gladness, and in your appointed seasons, and in the beginnings of your months, ye have blown also with the trumpets over your burnt-offerings, and over the sacrifices of your peace-offerings, and they have been to you for a memorial before your God; I, Jehovah, [am] your God.'