Lawful good, but not lawful nice.
My deity requires Good, not Nice.
Evil doers abound! There they are, being all evil. You’re not evil. In fact, you’re Lawful Good. That probably gets you teased sometimes, but it just rolls off your shiny goodness like water off a Chaotic Neutral duck’s back.
When you’re good, you’re very, very good. But when you’re bad, you’re better. Except your chosen deity would take away all your powers, and then you wouldn’t be better at all. We really didn’t think that part through. Oh well. There is one thing we do know: you don’t have to be lawful nice, especially if someone is being chaotic stupid.