29一切壞話都不可出於你們的口;但看事情的需要,說造就人的話,叫聽眾獲得益處。
29Let no evil speech proceed from your mouth; but that which is good, to the edification of faith, that it may administer grace to the hearers.
http://www.ccreadbible.org/Chinese%20Bible/TwDouBible/Ephesians_bible_Ch_4_.html