Numbers 10:8, 9
The sons of Aaron, the priests, are to sound the trumpets. This shall be a perpetual statute for you and the generations to come. . . .

Numbers 31:6
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.

Judges 20:27, 28
Then the Israelites inquired of the LORD. (In those days, the ark of the covenant of God was there, . . .

1 Samuel 14:18
Then Saul said to Ahijah, "Bring the ark of God." (For at that time it was with the Israelites.)

1 Samuel 30:7, 8
Then David said to Abiathar the priest, the son of Ahimelech, "Bring me the ephod." So Abiathar brought it to him, . . .

2 Chronicles 13:12
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."