Deuteronomy 3 reveals how God enabled Israel to defeat Og king of Bashan, a giant with fortified cities, demonstrating that God always finishes what He starts. Unlike humans who often abandon projects midway, God completes His work in our lives. When facing new battles, we can proceed without fear, knowing God has already determined the victory. Our victories are God's doing, not our own strength. Even when facing impossible situations like Og's intimidating size, we can trust that God will complete His purposes in our lives, just as Philippians 1:6 promises.