But how will a Christian man war, nay, how will he serve even in peace, without a sword, which the Lord has taken away? For albeit soldiers had come unto John, and had received the formula of their rule; albeit, likewise, a centurion had believed; still the Lord afterward, in disarming Peter, unbe
Here, also, one who examines each word minutely can gain a very accurate knowledge of the meaning of the Holy Scripture, so that there is no excuse for any of us being led astray into the snare of sin by an erroneous belief that some sins are punished while others may be committed with impunity. For, what says the apostle?— “destroying counsels and every height that exalts itself against the knowledge of God”; so that every sin, because it is an expression of contempt for the divine law, is called a “height that exalts itself against the knowledge of God.”
By “worldly weapons” he means wealth, glory, power, loquaciousness, cleverness, half-truths, flatteries, hypocrisies and so on. The apostle does not use such weapons but only those which are spiritual.
And he said not, 'we are not carnal,' but, "our weapons." For as I said, for the present he discourses of the Preaching, and refers the whole power to God. And he says not, 'spiritual,' although this was the fitting opposite to "carnal," but "mighty," in this implying the other also, and showing that their weapons are weak and powerless. And mark the absence of pride in him; for he said not, 'we are mighty,' but, "our weapons are mighty before God." 'We did not make them such, but God Himself.' For because they were scourged, were persecuted, and suffered wrongs incurable without number, which things were proofs of weakness: to show the strength of God he says, "but they are mighty before God." For this especially shows His strength, that by these things He gains the victory. So that even though we are encompassed with them, yet it is He that wars and works by them. Then he goes through a long eulogium upon them, saying, "To the casting down of strong holds."
[AD 220] Tertullian on 2 Corinthians 10:4