Numbers 10:8-10

New International Version - UK

⁸ ‘The sons of Aaron, the priests, are to blow the trumpets. This is to be a lasting ordinance for you and the generations to come. ⁹ When you go into battle in your own land against an enemy who is oppressing you, sound a blast on the trumpets. Then you will be remembered by the Lord your God and rescued from your enemies. 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.’