What you are does not define who you are, it's what you do.

A country claims to be Catholic, and yet many politicians, all Catholics themselves, all are not good role models for good Christian/Catholic leaders. The result: their constituents say "If they do it, we'll do it too." Some of their constituents do not know of what they do. But in the end, they say "everyone does it, so why can't we?"

It's not what you are that defines you, it's what you do.