When we speak it is presumed that we know what we are saying.
And we should say what we mean and mean what we say.
But when we say things that we don't mean, then it would lead to confusion and misunderstanding.
And when we use rough words, it would also lead to tension and ill-feeling.
Words like "fool' and "renegade" are rough words to use on people.
In a fit of anger, we might have use those and other derogatory words on others.
But do we really know what are the meaning of those words?
In the gospel, Jesus takes a serious stand on those words.
If we use those words and yet if we don't know what those words really mean, then why are we using those words on others.
So let us say what we mean and mean what we say.
But let us also not be mean in what we say.