Season the Brisket:In a small bowl, mix together the thyme, paprika, black pepper, salt, onion powder, garlic powder, and cumin. Rub the spice mixture evenly over the entire brisket.
Set Up the Slow Cooker:Pour the water into a 7-quart slow cooker. Place the seasoned brisket into the water. Drizzle the liquid smoke and Worcestershire sauce over the top of the meat.
Slow Cook:Cover and cook on low heat for 8 to 10 hours, until the brisket is fork-tender and easily shredded.
Shred the Brisket:Carefully remove the brisket from the slow cooker. Discard any excess fat. Use two forks to shred the meat.
Add the Sauce:Return the shredded brisket to the slow cooker. Pour the barbecue sauce over the meat and stir to coat. Cover again and cook on low for another 30 minutes, or until the sauce is fully heated.
Serve and Enjoy:Serve warm in sandwiches, on tacos, or alongside classic sides like cornbread and baked beans.