<p>10:4 <i>For the weapons of our warfare are not of the flesh but mighty before God to the casting down of strongholds-&nbsp;</i>The allusion is to the LXX of Prov. 21:22: &quot;A wise man attacks fortified cities and demolishes the fortress in which the ungodly trusted&quot;. Note that in 9:6 Paul has quoted from Prov. 22:8, so this part of Proverbs was in his mind in formulating his argument in this part of the letter. We see here how the inspiration process worked- the ideas of the Spirit are reworked by the Spirit within the mind or spirit of the inspired writer. Paul sees himself really at war, using wisdom (according to the Proverbs allusion) to bring down all kinds of apparently solid and impregnable structures. His sense here is exactly that of 1 Cor. 1, where he says that the Spirit overthrows the unspiritual wisdom of men which seems so strong. He perceives those strongholds as being in the minds of the Corinthians and the false teaching received.</p>