"You use your mouth for evil and harness your tongue to deceit." (Psalm 50:19, NIV).
"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)
Words are powerful. They can be used to bless or curse. They can be used to worship or blaspheme. We can speak truth or lies. We can use words to build someone up or entirely destroy their lives. They can express love or hate. There's almost no limit to what words can accomplish.
Yet, how often do we think before we speak? How often do we pause to consider the power of our words and the impact of what we're about to say? Or do we let our words flow unfiltered, heedless of the devastating effect they often have? Are we quick to throw our opinions around without reflecting on whether it's beneficial or discouraging to the person with whom we're sharing? Do we stop and think about that joke we're getting ready to tell, whether it's appropriate for a mouth that belongs to Jesus? I've found that when I'm not intentional with my speech, I sometimes end up using my mouth for evil, rather than good. Even when our motives are good, careless words can turn constructive criticism into scathing rebuke because our tongues are deceitful–even to our own selves!
Ephesians 4:29 is a good reminder to use our words to build others up, to say what is needed (which isn't always what is nicest) so that another can grow as a person and as a follower of Jesus. Let's use our words to benefit those who listen, rather than to our own good, our own glory, or our own advantage. What if we used the power of our words to serve another this week? What if we used our mouths to ask or grant forgiveness, to tell our spouses how much we love them, or to say to our kids how proud of them we are? What if we asked ourselves, "What does this person need to hear from me to be encouraged today?" How could that change a relationship or mend broken fences?