Expositor's Bible Commentary Commentary 2 Corinthians 10:3

"For though we walk in the flesh, we do not war according to the flesh" — 2 Corinthians 10:3 (ASV)

Paul draws a clear distinction between existence “in the world” and worldly conduct and techniques. He does not deny his human weakness, yet he affirms that spiritual warfare demands spiritual weapons (vv.3–4a; cf. Ephesians 6:11–17). A successful campaign can be waged in the spiritual realm only as worldly weapons are abandoned and total reliance is placed on spiritual weapons, which can demolish apparently impregnable fortresses where evil is entrenched (v.4b).