What does it mean for a moral statement to be true?
In many religions (which do tend towards moral realism :-/) morality is quite similar to physics: it describes the way our world is constructed. Good people go to heaven, evil people go to hell, karma determines your rebirth, etc. etc. Morality is objective, it can be discovered (though not exactly by a scientific method), and “this moral statement is true” means the usual thing—correspondence to reality.
In many religions (which do tend towards moral realism :-/) morality is quite similar to physics: it describes the way our world is constructed. Good people go to heaven, evil people go to hell, karma determines your rebirth, etc. etc. Morality is objective, it can be discovered (though not exactly by a scientific method), and “this moral statement is true” means the usual thing—correspondence to reality.