He said not ‘which ye have spoken,’ but makes His teaching of universal application to the whole race of mankind, and at the same time His words less grievous to them that heard them. By an “idle word” is meant one that is false, that accuses any falsely. Some indeed say that it includes all light talk, all such as stirs immoderate laughter, or shameful and immodest words.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).