1 Corinthians 15:33 – Be not deceived: evil communications corrupt good manners.
We have a saying here in the South, “Would you kiss your mama with that mouth?” This response to someone’s ugly words and filthy communication suggests that our mouths are polluted by what comes out. Whether it is cussing or just words spoken in anger, such things are unworthy of Christ and His disciples.
When He was confronted about His disciples eating without washing their hands, Jesus emphasized the importance of our speech. “Hear, and understand: Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth a man” (Matthew 15:10-11). While we know that we can poison ourselves with corrupt food and water, it is more important to realize that our language can damage the speaker and others. Reputations can be ruined and doctrines besmirched by hurtful or misleading words.
The classic form of corrupt communication is using the Lord’s name in vain. This sin was so grave that God issued a decree of death for those that blasphemed the name of the Lord as seen in Leviticus 24:10-16. It is critically important. Our word represent us and our Lord.
In the same way that no one would want to drink from a dirty cup, no one would want to listen to an “Christian” with a dirty mouth. For this reason, Paul emphasized this point again and again writing, “Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers” (Ephesians 4:29). Defy the trend. Be pure.