Ignorance: Satan's Schemes

The NET Bible (Second Edition)

2 Corinthians 2:11

so that we may not be exploited by Satan (for we are not ignorant of his schemes).

We are not ignorant of Satan’s schemes is in the context of the need to forgive a brother that has fallen into immoral behavior.

This brother was repentant of his sin but the church was still not willing to let him back into the fellowship.

To this Paul says we must forgive if he is repentant because if we don’t Satan can use the unforgiveness of the church to exploit the church.