Verse from Ephesians

污秽的言语一句不可出口，只要随事说造就人的好话，叫听见的人得益处。 (以弗所书 4:29)

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)

Unwholesome speech was a problem even in the apostle Paul’s day. He reminded the Christians at Ephesus that they should put away vulgarity, lewdness, slander, and obscene talk from their lives (Eph. 5:4; Col. 3:8).