2 Chronicles 13:12

8 And now you think you can resist the kingdom of the LORD, which is in the hands of David’s descendants. You are indeed a vast army, and you have with you the golden calves that Jeroboam made for you as gods.

9 But did you not drive out the priests of the LORD, the sons of Aaron, and the Levites? And did you not make priests for yourselves as do the peoples of other lands? Now whoever comes to consecrate himself with a young bull and seven rams can become a priest of things that are not gods.

10 But as for us, the LORD is our God. We have not forsaken Him; the priests who minister to the LORD are sons of Aaron, and the Levites attend to their duties.

11 Every morning and every evening they present burnt offerings and fragrant incense to the LORD. They set out the rows of showbread on the ceremonially clean table, and every evening they light the lamps of the gold lampstand. We are carrying out the requirements of the LORD our God, while you have forsaken Him.

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.”

13 Now Jeroboam had sent troops around to ambush from the rear, so that while he was in front of Judah, the ambush was behind them.

14 When Judah turned and discovered that the battle was both before and behind them, they cried out to the LORD. Then the priests blew the trumpets,

15 and the men of Judah raised the battle cry. And when they raised the cry, God routed Jeroboam and all Israel before Abijah and Judah.

16 So the Israelites fled before Judah, and God delivered them into their hands.

Read all of 2 Chronicles 13