What does the Bible say about God's judgment in warfare?

The concept of God's judgment expressed in warfare is a complex one, particularly when we read about the conquest narratives in the Old Testament. In these accounts, such as in Joshua, we see God employing Israel as an instrument of His judgment against worshippers of false gods and entrenched sin. This is part of God's righteous governance in history. For instance, God told Joshua to conquer the land as part of fulfilling His promise to Abraham and dealing with the iniquity of nations, like the Amalekites, whose cup of sin was full (Joshua 8:1-29). Therefore, the harsh realities of war can be understood through the lens of divine judgment rather than merely human conflict.