88. [88.] In one city I saw a persecution of Muslims by Christians, a persecution from which they could hardly be rescued. It was carried on by cunning arts, of which there are many in the spiritual world. I then saw their city sink down a little at the center, and a wall was built around it, although the depression was so small that the people could climb up and down, and thus they were protected and delivered from their persecutors, who departed.