Let no unwholesome word proceed from your mouth, but only such a word as is good for edification according to the need of the moment, so that it will give grace to those who hear. (Ephesians 4:29)
It is likely not new information to you, but still a good reminder for us all that our words matter. What we say to others and, equally important, what we don't say, matters; "Like apples of gold in settings of silver is a word spoken in right circumstances."(Proverbs 25:11)
Our words can encourage, edify and bless others. Or they can discourage, tear down, and curse others. The Apostle James puts it this way; With it (the tongue) we bless our Lord and Father, and with it we curse men, who have been made it the likeness of God; from the same mouth come both blessing and cursing. My brethren, these things ought not to be this way. (James 3:9-10)
Of course, sometimes. it may be best to not say anything. It is good to remember the wisdom our parents and teachers taught us when we were children; "Think before you speak."; "Choose your words carefully." "If you can't say something nice, don't say anything at all."
So also the tongue is a small part of the body, and yet it boasts of great things. (James 3:5) Maranatha!