12 Grk “are not fleshly [weapons].” The repetition of the word “warfare” does not occur in the Greek text, but is supplied for clarity.
13 Or “but (are) divinely powerful,” “but they have divine power,” or “but are powerful for God’s [service]”; Grk “but are powerful to God.”
14 Ultimately Paul is referring here to the false arguments of his opponents, calling them figuratively “strongholds.” This Greek word (ὀχύρωμα, ochurōma) is used only here in the NT.
15 Or “speculations.”

In other versions

For the weapons of our warfare are not of the flesh but have divine power to destroy strongholds.

The weapons we fight with are not the weapons of the world. On the contrary, they have divine power to demolish strongholds.

since the weapons of our warfare are not of the flesh, but are powerful through God for the demolition of strongholds. We demolish arguments

We use God’s mighty weapons, not worldly weapons, to knock down the strongholds of human reasoning and to destroy false arguments.

for the weapons of our warfare are not merely human, but powerful to God for the tearing down of fortresses, tearing down arguments

(For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;)

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