We are faced each day with the need to figure out what is good and what is evil.
If we judge incorrectly our lives can get messed up. If we judge correctly everything goes better. Given the importance of getting it right, it’s helpful to understand how.
Moroni said it’s very clear and straightforward to judge correctly between good and evil. “The way to judge is as plain, that ye may know with a perfect knowledge, as the daylight is from the dark night.”
And here is how to do it: “every thing which inviteth to good and persuadeth to believe in Christ” is good. “Whatsoever thing persuadeth men to do evil, and believe not in Christ, and deny him, and serve not God” is of the devil and evil.
I asked my seminary class what specific areas in their life would it be helpful to apply what Moroni is teaching. They all strongly agreed that they should apply it to their friends. And the other was school.