There are numerous passages in the New Testament where Christ utilized a few loaves of bread and some fish to feed thousands of people who have come a long distance to listen to him. This, on the surface sounds implausible, but only because we are locked into our perceived rules of the natural world. But once you understand the reality of the spirit world it becomes a distinct possibility.
What does this mean as interpreted by Spiritism? One may read this verse with clarity given the information about the spirit universe and the hierarchy of spirits which have been revealed to us by Spiritism.