Numbers 10:2-10
Make you two trumpets of silver; of a whole piece shall you make them: that you may use them for the calling of the assembly, and for the journeying of the camps.
Nave's Topical Index—AKJV

Numbers 31:6
And Moses sent them to the war, a thousand of every tribe, them and Phinehas the son of Eleazar the priest, to the war, with the holy instruments, and the trumpets to blow in his hand.
Nave's Topical Index—AKJV

Joshua 6:1
Now Jericho was straightly shut up because of the children of Israel: none went out, and none came in.
Nave's Topical Index—AKJV

2 Chronicles 13:12
And, behold, God himself is with us for our captain, and his priests with sounding trumpets to cry alarm against you. O children of Israel, fight you not against the LORD God of your fathers; for you shall not prosper.
Nave's Topical Index—AKJV