In a large pot, heat the olive oil over medium heat.
Add the minced onion and garlic and sauté for about a minute until fragrant.
Add the chopped cabbage, carrots, and celery to the pot. Sauté for 5-7minutes, stirring occasionally, until the vegetables start to soften. Add choped parsley.
Pour in the can of stewed tomatoes, including their juices.
Season with salt and pepper to taste.
Pour in the water. The amount of water may vary depending on the size of the cabbage and your preferred soup consistency. You can start with 6 cups and add more later if needed.
Bring the soup to a boil, then reduce the heat to a simmer. Cover the pot and let the soup cook for about 20-25 minutes, or until the vegetables are tender.
Taste the soup and adjust the seasonings as needed.
Once the soup is ready, ladle it into bowls.
Garnish with a sprinkle of chopped parsley.
Serve the cabbage soup hot.