Originally Posted by 907ak
who deemed them "filthy" words?
Society. How impractical would it be for God to give us a list of words that could not be spoke? There would just be substitution for the words that end up being just as vulgar. There is no reason to use such words, and doing so does not glorify God, and God certainly doesn't want us offended people, as it gives Christians a bad name (we already have a terrible name as it is). While it may not be a specific sin, it'd be hard for me to take someone as a serious Christian if they swear a lot. But that's me, I can't tell where their heart is at.