HEY MIKE! What’s the big deal about curse words? I mean, they’re just that — words. Where did they come from, and why do Christians condemn them?
— D.K., Fontainelleau, France
Before we check out what the Bible says, let’s crack open a Websters and look up some definitions of the word curse: "to swear at; use profane, blasphemous, or obscene language against; to bring evil or injury on; afflict." (Take note of two key words used here: against and afflict.)
Now let’s pop over to James 3:9-11 for some insight: "With the tongue we praise our Lord and Father, and with it we curse men, who have been made in God’s likeness. Out of the same mouth come praise and cursing. My brothers, this should not be. Can both fresh water and salt water flow from the same spring?"
The fact is, D.K., words are far from harmless — especially the ones that curse, afflict and tear down. And it’s kinda obvious where they come from and why they’re off limits to Christians: SIN.
Consider this about all the words that casually fly out of our mouths:
• God wants us to have no part of sinful acts — which includes using bad language. He makes it clear that sin and holiness just don’t mix. "But now you must rid yourselves of all such things as these: anger, rage, malice, slander and filthy language from your lips" Colossians 3:8.
• Words — especially curse words — can be deadly. They can cut open a heart and destroy a person’s self-image. They can ignite a fire and drive someone to violence. The wrong kinds of words can cause incredible harm. That’s why James tells us to control our tongues. (See James 3:1-6.)
• Christians must use words for good, not evil. Through our words, we can promote healing. We can express God’s love and show that He cares. "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. 
