First, the fish are mentioned, the animal life with the lowest consciousness. We have all had some experience of this. Suppose there are some goldfish swimming in the water and we come near them. They will be frightened away. However, if we scatter some food into the water and keep away, all the fish will return. This life is higher than the tree life, higher than the plant life (Ezek. 47:7, 9). Although it is not very high, it is higher. This is the first step of the growth of life.