Heat oil in a large pot. Add the carrots, onions, celery and garlic. Cook until softened.
Add the broth and bring to a boil
Lower the heat to simmer and then add the rice. Cook for about 10-12 minutes, until rice is cooked
Add the tahini, chickpeas, lemons and spinach. Add salt and pepper to taste. The soup is done when the spinach has finished wilting