Classic Greek White Bean Soup with Plum Tomatoes

Name: Classic Greek White Bean Soup with Plum Tomatoes
Cuisine: European, Mediterranean, Greek
Ingredients: 1 pound dried white beans (such as Great Northern or Navy beans); 10 cups water; 1/2 cup olive oil; 1 large onion (diced); 2 medium carrots (diced); 2 ribs celery (diced); 1 bay leaf; 1 (14-ounce) can diced plum tomatoes (un-drained); 2 tablespoons tomato paste; Dash salt (or to taste); Dash freshly ground black pepper (or to taste); Garnish: 1/4 cup fresh parsley (chopped)