Spicy Lentil Soup

Spicy Lentil Soup:
1 tbsp Oil
1 cup chopped onion
3/4 cup diced green pepper
3/4 cup diced red bell pepper
4 cloves, finely chopped
6 cups water
1can diced tomatoes
2 cups dried red or green lentils, rinsed and drained
2 tbsp red wine vinegar
11/2 tsp cumin
11/2 tsp salt
1 tsp paprika
1/4 tsp red pepper flakes

Heat oil in a dutch oven over medium heat. Add onions, bell peppers and garlic; cook for 2 minutes. Add remaining ingredients (water through red pepper flakes) Bring to a boil. Reduce heat and simmer, partially covered, stirring occasionally, until lentils are tender, about 25 minutes!