We are engaged in a real war—a spiritual battle for our souls and for the souls of humanity. Yet the great news is that the battle is the Lord's. Our victory is certain as we stand in the armor He has given us, fully persuaded that He has already defeated our enemy at the cross and continues to fight for us until the war is over.
To stand strong in the battle, we need to first look back to where it all started and see how the Warrior King has been fighting for His people from the very beginning. Battle and spiritual warfare imagery are not just New Testament concepts but find their origin in the Old Testament, beginning with the first Gospel in Genesis 3:15.
After the Fall, God promises that the Serpent will strike the heel of the Seed of the Woman, Jesus Christ, but that Christ will ultimately prevail by crushing the Serpent's head. From that first promise, Scripture unfolds the conflict between the kingdom of God and the kingdom of darkness throughout the history of Israel.
Throughout the Old Testament, from the Law through the Prophets, God reveals Himself not only as the Lord of all creation but also as the Warrior King, the Commander of the armies of Israel and of heaven, who goes before them to fight their battles. The visible battles they fought revealed the invisible conflict that had been raging since the Garden of Eden.
One of the clearest demonstrations of God's role as Warrior King comes in His deliverance of Israel from Egypt as He sends the plagues and repeatedly commands Pharaoh to let His people go. This shows He is the King of Kings and Lord of Lords, and that every knee must bow before Him and confess Him as Lord. At the waters of the Red Sea, He makes a declaration of His role and intention as the sovereign Commander: "The Lord will fight for you; you need only to be still" (Exodus 14:14).
In the book of Deuteronomy (1:30, 3:22, 20:4), He tells Israel not to fear because He is fighting for them to give them victory. We not only see passages testifying that "the Lord fought for Israel" (Joshua 10:14), but also that He always won the battle: "Not one of all their enemies had withstood them, for the LORD had given all their enemies into their hands" (Joshua 21:44).
While Israel saw God fighting for them through His sovereign rule, Isaiah gives us a prophetic glimpse of the Divine Warrior Himself preparing for battle. Here the veil is pulled back, and we see the preincarnate Christ clothing Himself as the Warrior King before going to judge His enemies. "The Lord goes out like a mighty man, like a man of war He stirs up His zeal; He cries out, He shouts aloud, He shows Himself mighty against His foes" (Isaiah 42:13).
Again, Isaiah declares, "He put on righteousness as a breastplate, and a helmet of salvation on His head; He put on garments of vengeance for clothing, and wrapped Himself in zeal as a cloak" (Isaiah 59:17). In Isaiah 11:4–5, we find another example that echoes the warfare imagery of Ephesians 6: "Righteousness shall be the belt of His waist, and faithfulness the belt of His loins."
As we transition to the New Testament, Paul intentionally repeats Isaiah's Warrior King imagery when he commands believers to "put on the whole armor of God," the armor of light, and calls believers soldiers who are to be prepared for battle (Ephesians 6:10–18; 2 Timothy 2:3–4).
They are given spiritual weapons that are not of this world (2 Corinthians 10:3–5) and are shown that, like Israel, this is primarily a fight of faith—a battle to remain fully persuaded in our trust that the Lord will save and deliver us from the enemy. Paul is not creating a new metaphor but reminding believers that the armor they are to wear is God's own armor. Amazingly, the Warrior King now clothes us with the same armor that He used against His enemies when He won the victory.
The physical battles of the Old Testament pointed to the greater spiritual battle Christ would ultimately win through His life, death, and resurrection. In the New Testament, Paul reminds us that our battle, regardless of how physical it may appear, "is not against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places" (Ephesians 6:12).
The Old Testament battles were never recorded just to tell us Israel's history. They were written by the King Himself to teach His people where victory is truly found (Isaiah 6:1–3). Every battle reminds us that the Lord fights for His people, keeps every promise, and never loses a war. As we witness Him commanding the armies and winning battles, our faith is strengthened so that we, too, can declare with confidence that "the battle is not [ours], but God's" (2 Chronicles 20:15). The same Warrior King who fought for Israel now fights for us, clothing us in His own armor until the final victory is won.
"Give us aid against the enemy, for human help is worthless. With God we will gain the victory, and He will trample down our enemies." (Psalm 108:12–13)
