Numbers 10:8-10

Amplified Bible, Classic Edition

⁸ And the sons of Aaron, the priests, shall blow the trumpets, and the trumpets shall be to you for a perpetual statute throughout your generations.

⁹ When you go to war in your land against the enemy that oppresses you, then blow an alarm with the trumpets, that you may be remembered before the Lord your God, and you shall be saved from your enemies.

¹⁰ Also in the day of rejoicing, and in your set feasts, and at the beginnings of your months, you shall blow the trumpets over your burnt offerings and your peace offerings; thus they may be a remembrance before your God. I am the Lord your God.