Rinse and sort beans. Place beans in a Dutch oven or soup kettle; add water to cover by 2 in. Bring to a boil; boil for 2 minutes. Remove from the heat; cover and let stand for 1 to 4 hours or until beans are softened., Drain and rinse, discarding liquid. In a large Dutch oven or soup kettle, place the beans, ham bone or hocks and 3 quarts water. Bring to boil. Reduce heat; cover and simmer for 2 hours., Skim fat if necessary. Add the onions, garlic, celery, parsley, potatoes, salt and pepper; simmer 1 hour longer., Set aside ham bones until cool enough to handle. Remove meat from bones; discard bones. Cut meat into bite-sized pieces and return to Dutch oven. Heat through. Sprinkle with parsley or chives.