Oddly, that also applies to ethics just as it does to common sense.
It is astonishing how many people are unethical because they believe their kind of Christian faith (for example) permits them to take an ethically circuitous route.
Like people who don't report cash income on their taxes, some who plagiarize the work of others, and still others who tell whoppers and are amazingly intellectually dishonest...all in the name of Christianity you understand.
“...their kind of Christian faith...”
Preach on. There’s only one real Christian faith, and you and I both know we are not talking about denominations. If someone’s “faith” allows them to keep sinning without remorse, it’s pretty obvious they don’t have it.
We all sin. The question is, will we admit it? Real Christians will. And then rely on God for how to deal with it.