“Be infants in evil ...”
“We are not ignorant of [Satan’s] designs.”
In the first instance, Paul appears to be suggesting that Christians in the churches of Corinth were better off the less they knew about evil. Perhaps naivety has its benefits. In the second, the same apostle writes to the very same Christians that “we” — which I take to mean Paul and Timothy, authors of the letter and fellow workers in Christ — are familiar with the manipulations and schemes Satan uses to pit Christian against Christian. That implies a bit of inside knowledge about the way in which evil works, or at very least basic pattern recognition.
Is Paul suggesting there are two different standards of understanding about evil: one for experienced Christian workers and another for the average Joe and Jane in the pews? Or possibly Paul is just being inconsistent ...