I was at the opening of a new hall, before many years. The speaker invited some of the main figures involved in the project. One of them said JHVH guided them when buying land. There were two favorable plots. One in the lowlands and one in the elevated part of the land. They chose the latter. After a while there was a flood, and houses that were in the lowlands flooded. The brothers were very happy that their hall was not damaged. Of course, there is always the possibility of landslides, so houses on elevated ground may be damaged or destroyed.
In this case, god did not control the weather, but he did control the purchase of land. That was message, responsible brothers publicly made from stage. Their faith said so to listeners. And faith of listeners may grow too.
It can be how satan is not completely god of this system, because JHVH helping WT Society in this case. But in some other examples he not. It is confusing :)), and we will never know when god will help and when will not.