Since the first moment of creation, some souls—the elect—had been destined for eternal bliss and others for eternal torment. Good works could not save those whom “predestination” had marked for the infernal fires.
From “The American Pageant” by Thomas A. Bailey
I would like to know why the writer is using "works" instead of "work" here. As far as I know, "work", when functioning as a countable noun, means books, paintings and music.