1. Heat oil in a large pot. Add onion and celery and sauté until onion is golden. Add garlic and stir about 30 seconds. Add all remaining ingredients and bring to a boil.
2. Reduce heat to a simmer and cook, covered, for 40 minutes. With an immersion blender, try to blend only chickpeas (that are on the bottom) and some tomato pieces.
3. Serve with crusty bread for a balanced full meal.