Inasmuch as water-baptism is a work, let us ask you to give a straight answer to this question, O SeaBass:
What happens to a believer in the Son of God, if he fails to get immersed?
What happens to all the Presbyterians, Lutherans, Methodists, and Episcopalians [& other denominationals] who happen to trust Christ as Savior, but were sprinkled as babies and die without being actually being water-baptized (as defined by dipping, dunking, immersing)?
Are they roasted in the Lake of Fire with weeping, wailing, and gnashing of teeth?