What does the Bible say about God fighting our battles?

In 2 Chronicles 20:15, the Lord reassures the people of Judah through the prophet Jehaziel, stating, 'be not afraid nor dismayed... for the battle is not yours, but God's.' This profound truth underlines the absolute sovereignty of God over every conflict we face. Just as Jehoshaphat understood that he could not win the battle against his enemies alone, believers are called to recognize their inability to save themselves and must rely solely on God's power and intervention. Through Christ's victory, we see that the struggles against sin and the consequences of our fallen nature are ultimately won by Him, as He accomplished salvation on our behalf.