Is vulgarity a sin?

Rabbitpirate asks:

"Where in the Bible does it say that vulgarity is a sin?"

@Rabbitpirate,

(Just in case you were actually seeking an answer to your question...)

Let's be clear. There is no sin in the inelegance of an expression.

Where the sin lies in the condition of a man's heart, his inner being. (Romans 7:22 cf. Luke 6:45) The sin is in the malicious intent behind an expression. (cf. Matthew 5:22) The sin is in a cruel disregard for others. (cf. Philippians 2:3)

"Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen." Ephesians 4:29 (NIV)

"Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to those who hear." Ephesians 4:29 (ESV)

"Be completely humble and gentle; be patient, bearing with one another in love." Ephesians 4:2 (NIV)

The Bible teaches that followers have freedom in Christ. But it also cautions that followers need to exercise those freedoms with great care. (cf. 1 Corinthians 8:9). Followers especially need to exercise control over their words. (cf. James 3)

"For whoever desires to love life and see good days, let him keep his tongue from evil and his lips from speaking deceit" 1 Peter 3:10 (ESV) (cf. Psalm 34:12-16)

HTH