Soak beans overnight in the fridge, drain them in the morning.
Turn the crock pot on high.
Add in the beans, oregano, thyme, bay leaf, salt, pepper, and paprika. Add enough water to come about 1 inch above the beans. Put the lid on and cook 2 hours.
Beans should be getting tender. Add in the onion, garlic, celery, bell pepper, and sausage. Cook another 1-2 hours or until beans are cooked through and sauce has thickened. Adjust seasoning and set to keep warm.