In Case You Were Wondering: Why Is it Bad for Christians to Cuss?

I’m working on a project I’ve got to get done this week (prayer appreciated!), so I’ll be re-running a few favorite articles from the archives in lieu of new content.

The In Case You Were Wondering series was the “beta version” of The Mailbag (our regular Monday feature). This article first appeared at Satisfaction Through Christ on September 30, 2015.

Why is it bad for Christians to cuss?
Why are certain words considered “bad words”?

For every kind of beast and bird, of reptile and sea creature, can be tamed and has been tamed by mankind, but no human being can tame the tongue. It is a restless evil, full of deadly poison. With it we bless our Lord and Father, and with it we curse people who are made in the likeness of God. From the same mouth come blessing and cursing. My brothers, these things ought not to be so. James 3:7-10

Ouch. Our mouths can really get us into trouble, can’t they? We can lie, boast, and say all kinds of hurtful things to others. And one way that God definitely did not intend for Christians to use our mouths is to use profanity or vulgar speech.

But why? What makes one string of four letters good and noble, such as “love,” “pray,” or “holy,” while another string of four letters is cause for washing out mouths with soap and more restrictive movie ratings?

It’s because of the meaning attached to the word. Human beings don’t deal with words as random assemblages of letters. Human beings deal with words in terms of meaning. And God doesn’t want the meanings that come out of our mouths to point people away from Him, but, rather, to represent Him well. We can see this in the instructions He gives us about the things we say:

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

Let there be no filthiness nor foolish talk nor crude joking, which are out of place, but instead let there be thanksgiving. Ephesians 5:4

Let the words of my mouth and the meditation of my heart be acceptable in your sight, O Lord, my rock and my redeemer. Psalm 19:14

If you’re a Christian who uses foul or vulgar language, have you ever stopped to think about why you do that? What is the motivation of your heart for saying those words? Is it Christlike? Do you think Jesus would use that kind of language? When you say those words do they point people to or away from Christ? What impression does it give people of Christians, the church, and Christ when they hear you cussing? Think about the definitions of those words. When you say those words, what definition pops up in the mind of the person who hears you? Is it something good, pure, honorable, etc.?

But when you come right down to it, swearing is really not a disease to be treated, but a symptom of another disease- a heart infiltrated by worldliness. Luke 6:45 tells us:

The good person out of the good treasure of his heart produces good, and the evil person out of his evil treasure produces evil, for out of the abundance of the heart his mouth speaks.

It’s important to remedy the outward behavior of filthy language, but that only comes from having a heart that is filled with the good treasure of Christ.