Summary: Words carry immeasurable significance: The universe was created with a word; Jesus healed and cast out demons with a word; rulers have risen and fallen by their words; Christians have worshiped through words of song, confession, and preaching.
Question: "What does the Bible say about the power of words?"
Answer: Words are not simply sounds caused by air passing through our larynx. Words have real power. God spoke the world into being by the power of His words (Hebrews 11:3), and we are in His image in part because of the power we have with words. Words do more than convey information. The power of our words can actually destroy one’s spirit, even stir up hatred and violence. They not only exacerbate wounds but inflict them directly. Of all the creatures on this planet, only man has the ability to communicate through the spoken word. The power to use words is a unique and powerful gift from God.
Our words have the power to destroy and the power to build up (Proverbs 12:6). The writer of Proverb tells us, “The tongue has the power of life and death, and those who love it will eat its fruit” (Proverbs 18:21). Are we using words to build up people or destroy them? Are they filled with hate or love, bitterness or blessing, complaining or compliments, lust or love, victory or defeat? Like tools they can be used to help us reach our goals or to send us spiraling into a deep depression.
Furthermore, our words not only have the power to bring us death or life in this world, but in the next as well. Jesus said, “But I tell you that men will have to give account on the day of judgment for every careless word they have spoken. For by your words you will be acquitted, and by your words you will be condemned” (Matthew 12:36–37). Words are so important, that we are going to give an account of what we say when we stand before the Lord Jesus Christ.
The apostle Paul wrote, “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). In this passage, Paul is emphasizing the positive over the negative. The Greek word translated “unwholesome” means “rotten” or “foul.” It originally referred to rotten fruit and vegetables. Being like Christ means we don’t use foul, dirty language. For some reason, many people today think it is macho or liberating to use vulgar humor, dirty jokes, and foul language, but this kind of talk has no place in the life of a Christian. Paul continues: “. . . but only what is helpful for building others up according to their needs, that it may benefit those who listen.” This is reminiscent of his words to the Colossians: “Let your conversation be always full of grace, seasoned with salt, so that you may know how to answer everyone” (Colossians 4:6; see also Colossians 3:16).
There is a remarkable parallel between Ephesians 4:25, lying; Ephesians 4:28, stealing; and Ephesians 4:29, unwholesome talk. In each case Paul is urging us to be a blessing to those with whom we have daily contact. Paul is emphasizing that merely refraining from telling lies, stealing, or unwholesome speech is not enough. The truth is that Christianity is not a mere “don't” religion. As followers of Christ we should emulate the example of Jesus whose words were so filled with grace that the multitudes were amazed (Luke 4:22).