2 When you are about to go into battle, the priest is to come forward and address the army,
Deuteronomy 20:2 Cross References - BSB
Numbers 10:8-9
8 The sons of Aaron, the priests, are to sound the trumpets. This shall be a permanent statute for you and the generations to come.
9 When you enter into battle in your land against an adversary who attacks you, sound short blasts on the trumpets, and you will be remembered before the LORD your God and saved from your enemies.
Numbers 31:6
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
27 And the Israelites inquired of the LORD. (In those days the ark of the covenant of God was there,
28 and Phinehas son of Eleazar, the son of Aaron, served before it.) The Israelites asked, “Should we again go out to battle against our brothers the Benjamites, or should we stop?” The LORD answered, “Fight, for tomorrow I will deliver them into your hand.”
1 Samuel 14:18
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
2 Chronicles 13:12
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.”