Judges 20:18, 28

Before the battle the Israelites went to Bethel and asked God, “Which tribe should go first to attack the people of Benjamin?” The LORD answered, “Judah is to go first.”

and Phinehas son of Eleazar and grandson of Aaron was the priest.) The Israelites asked the LORD, “Should we fight against our relatives from Benjamin again, or should we stop?” The LORD said, “Go! Tomorrow I will hand them over to you.”