[At my school, a new girl has come. .. She visits a local homeless shelter, dresses modestly, hasn't ever had a boyfriend and wants to save herself for marriage, does her homework, and is really kind and considerate. She doesn't drink or do drugs, and doesn't like parties. The only problem is, she's atheist.]

Being an atheist, she has no real reason to stick with her moral beliefs, yet it seems as if she's doing a good job at it so far. With peer pressure and without God, it's very likely that she could fall into sin, but it's a lot less likely if you're there to be a good Christian influence in her life.