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“Your shield is a weapon, not a wall. You’re fighting with it every bit as much as your sword…. You see the way I twist my shield—make it flicker like a butterfly. There’d be arrows and spears and sword points flying off it in every direction if we were in a hot engagement” (Til We Have Faces by C. S. Lewis).
Here, Bardia instructs the Princess Orual on battle fighting. A shield representing faith is a well-known biblical metaphor: “In all circumstances take up the shield of faith with which you can extinguish all the flaming darts of the evil one” (Ephesians 6:16 ESV). We can effectively raise our faith, like a shield, to ward off an onslaught of lies, accusations, and doubts.