Psalms 81:3

³and will make an offering by fire to the LORD—a burnt offering, or a sacrifice, to accomplish a vow, or as a free will offering, or in your set feasts, to make a pleasant aroma to the LORD, of the herd, or of the flock—

⁴Behold, ^[+] I am about to build a house for the name of the LORD my God, to dedicate it to him, to burn before him incense of sweet spices, for the continual show bread, and for the burnt offerings morning and evening, on the Sabbaths, on the new moons, and on the set feasts of the LORD our God. This is an ordinance forever to Israel.

¹The LORD spoke to Moses, saying, ²“Make two trumpets of silver. You shall make them of beaten work. You shall use them for the calling of the congregation and for the journeying of the camps. ³When they blow them, all the congregation shall gather themselves to you at the door of the Tent of Meeting. ⁴If they blow just one, then the princes, the heads of the thousands of Israel, shall gather themselves to you. ⁵When you blow an alarm, the camps that lie on the east side shall go forward. ⁶When you blow an alarm the second time, the camps that lie on the south side shall go forward. They shall blow an alarm for their journeys. ⁷But when the assembly is to be gathered together, you shall blow, but you shall not sound an alarm.

⁸“The sons of Aaron, the priests, shall blow the trumpets. This shall be to you for a statute forever throughout your generations. ⁹When you go to war in your land against the adversary who oppresses you, then you shall sound an alarm with the trumpets. Then you will be remembered before the LORD your God, and you will be saved from your enemies.

¹⁰“Also in the day of your gladness, and in your set feasts, and in the beginnings of your months, you shall blow the trumpets over your burnt offerings, and over the sacrifices of your peace offerings; and they shall be to you for a memorial before your God. I am the LORD your God.”

²⁴“Speak to the children of Israel, saying, ‘In the seventh month, on the first day of the month, there shall be a solemn rest for you, a memorial of blowing of trumpets, a holy convocation. ²⁵You shall do no regular work. You shall offer an offering made by fire to the LORD.’”

²³He said, “Why would you want to go to him today? It is not a new moon or a Sabbath.” She said, “It’s all right.”

⁴²and with them Heman and Jeduthun with trumpets and cymbals for those that should sound aloud, and with instruments for the songs of God, and the sons of Jeduthun to be at the gate.

⁶with Benaiah and Jahaziel the priests with trumpets continually, before the ark of the covenant of God.

¹⁵You shall keep a feast to the LORD your God seven days in the place which the LORD chooses, because the LORD your God will bless you in all your increase and in all the work of your hands, and you shall be altogether joyful.

¹²Behold, God is with us at our head, and his priests with the trumpets of alarm to sound an alarm against you. Children of Israel, don’t fight against the LORD, the God of your fathers; for you will not prosper.”

¹⁴When Judah looked back, behold, the battle was before and behind them; and they cried to the LORD, and the priests sounded with the trumpets.