"Then all this assembly shall know that the LORD does not save with sword and spear; for the battle is the LORD's, and He will give you into our hands."
- 1 Samuel 17:47
When David faced Goliath, he knew the battle belonged to the Lord. He told the giant Philistine, "The battle is the LORD's, and He will give you into our hands" (1 Samuel 17:47).
Giants defeat us again and again because we face them in our own strength. We can't overcome our giants in our own ability. We need help. The battle belongs to the Lord.
This is why, before the apostle Paul mentioned a single piece of spiritual armor, he said, "Finally, my brethren, be strong in the Lord and in the power of His might" (Ephesians 6:10). We recognize we are weak, but at the same time, we acknowledge that God is great, that God is powerful. Jesus said, "Without Me you can do nothing" (John 15:5).
We need to know about our incredible resources that God has made available to us as Christians. Paul prayed that the believers in Ephesus would discover what God had done for them, asking that "the eyes of [their] understanding [be] enlightened; that [they] may know what is the hope of His calling, what are the riches of the glory of His inheritance in the saints" (Ephesians 1:18).
In the same epistle Paul goes on to say, "But God, who is rich in mercy, because of His great love with which He loved us, even when we were dead in trespasses, made us alive together with Christ (by grace you have been saved), and raised us up together, and made us sit together in the heavenly places in Christ Jesus" (Ephesians 2:4–6).
As believers, we positionally share in the power that Jesus has given to us. Therefore, we don't fight for victory; we fight from it. We have everything we need to prevail against the giants in our lives.