In a large saucepan over medium heat, combine onions, celery, carrots, garlic, and oil and sauté until all vegetables are almost tender, 5 to 10 minutes.

Add water, fresh tomatoes, canned tomatoes, chicken broth, barley, and black pepper.

Stir thoroughly and bring to a boil. Reduce heat to low and simmer until barley is tender, 35 to 40 minutes.