Ramban (Toras HaShem Temimah) A person does not have a part in the Torah of Moshe unless he believes that all things that happen are miracles and not part of Nature and examples of the natural events of the World. The goal of the Torah is entirely miraculous and complexly wondrous. There is no distinction between a person living a full healthy and pleasant life of 80 years while one who ate Teruma dies and the splitting of the Sea and the fact that no dog barked
All are miraculous events, involving alterations of Nature . What seems to us as being natural are in fact hidden miracles/ Thus we are not aware that a person recovering from disease is in fact because of the charity he gave while the death of a clearly healthy person was because he ate prohibited fats. Therefore the Rambam is problematic in the fact that he favors natural explanations over miraculous ones. He also says miraculous events are only temporary aberrations even though he rejects this idea in his treatise on Resurrection