Sort and wash beans. In 6-8 qt pot, soak beans in 4 cups water. Do not drain.
Meanwhile, sauté onions, pepper, and celery in a pan until tender. Add to pot along with salt and pepper.
Bring pot to a boil, then reduce heat and simmer until beans are tender.
Cook brown rice separately and add at end, or add dry rice to mostly cooked beans (making sure there are 2 cups of water) and simmer covered for 20-25 minutes until rice is tender.