Thousands of twinkling lights lit up the dark night sky, tinsel loosely wrapped around the 66-foot tall Christmas tree. Smiles radiated warmth through the crisp evening air as children’s fingers wrapped around steaming cups of hot chocolate, the beverage’s foam dotting their cold noses. Northside Hospital-Forsyth’s annual Celebration of Lights brought thousands to the hospital in Cumming Friday evening, kicking off the holiday season and bringing joy and aid to those fighting cancer.