Excerpt of Numbers 10 in targum jonathan
X. And the Lord spake with Mosheh, saying: Make for thee, of thine, two trumpets of silver of solid material, the work of the artificer shalt thou make them; and let them be thine, with which to convoke the assembly, and for the removing of the camps. And thou shalt blow upon them, and bring together to thee all the congregation at the door of the tabernacle of ordinance. If they blow upon one (only), the princes of the heads of the thousands of Israel shall assemble to thee. But when you blow an alarm, then the camps which are on the east are to go forward; and when they blow a second alarm, the camps on the south shall go forward; they shall blow the alarm for their journeys. And at the time of assembling the congregation you shall blow, but not an alarm. The sons of Aharon, the priests only, shall blow with the trumpets, which shall be to you, for a perpetual statute for your generations.
And when you enter upon the order of the line of battle for your country, with oppressors who oppress you, then shall you blow the alarm on the trumpets, that the remembrance of you may come up for good before the Lord your God, that you may be delivered from your enemies. And in the day of your rejoicings, and in your solemnities, and at the beginning of your months, you shall blow with the trumpets over your burnt offerings and your consecrated victims, and they shall be for a good memorial to you before the Lord your God; for Satana shall be troubled at the sound of your jubel notes: I am the Lord your God.