Jesus warned that our words are so important that they will actually determine our condemnation or justification. He said we will be held responsible for all our words, even our careless, idle words. “But I say to you that for every idle word men may speak, they will give account of it in the day of judgment. For by your words you will be justified, and by your words you will be condemned” (Matt. 12:36-37).
Elsewhere, Paul cautioned believers to disallow any corrupt or worthless talk to come from our mouth. Only those things which lift-up, encourage, and are gracious should be expressed to others. “Let no corrupt word proceed out of your mouth, but what is good for necessary edification, that it may impart grace to the hearers” (Ephesians 4:29). Obscenities, profanity, cursing, dirty jokes, or making fun of others is not something that should ever be found in the mouth of a believer. “Nor should there be obscenity, foolish talk or coarse joking, which are out of place, but rather thanksgiving” (Eph. 5:4 NIV).
Thank God there is a remedy for mouth sins. His grace and forgiveness is available for all manner of sin, whatever it may be. Jesus will forgive all sins that we confess to Him (1 John 1:9) — but we must also “forsake” them. “He who covers his sins will not prosper, But whoever confesses and forsakes them will have mercy” (Proverbs 28:13). The scriptures tell us to repent” of sin (Rev. 3:19), that is to “turn away” from sinful behavior. True repentance means that we will make every effort not to repeat our former sins and will seek to walk in the nature of Christ. Since mouth sins really originate in the heart (Matt. 12:34), repentance requires a change of attitude within. Such was David’s desire in his repentant prayer. “Hide Your face from my sins, And blot out all my iniquities. Create in me a clean heart, 0 God, And renew a steadfast spirit within me” (Psa. 51:9-10).
If you realize that your tongue is out of control, seek His forgiveness and allow Him to change the attitude of your heart and your mouth, so they will be pleasing to Him. “Let the words of my mouth and the meditation of my heart be acceptable in Your sight, 0 LORD, my strength and my Redeemer” (Psa. 19:14).