Priest: Duties of Sound the Trumpet in Summoning Assemblies and in Battle

“Make two trumpets of hammered silver to be used for calling the congregation and for having the camps set out. …

And Moses sent the thousand from each tribe into battle, along with Phinehas son of Eleazar the priest, who took with him the vessels of the sanctuary and the trumpets for signaling.

Now Jericho was tightly shut up because of the Israelites. No one went out and no one came in.

Now behold, God Himself is with us as our head, and His priests with their trumpets sound the battle call against you. O children of Israel, do not fight against the LORD, the God of your fathers, for you will not succeed.”