Deuteronomy 20:4

20:4 for the Lord your God goes with you to fight on your behalf against your enemies to give you victory.” ¹ 

Deuteronomy 20:12

20:12 If it does not accept terms of peace but makes war with you, then you are to lay siege to it.

¹ tn Or “to save you” (so KJV, NASB, NCV); or “to deliver you.”