The next verse speaks of stirring up strife, the opposite of the well of life.
Then we have the lips of someone who has understanding. This word is always used in a good sense and is used a lot that way in the New Testament.
There is an interesting phrase in verse 19 saying, “In the multitude of words there wanteth not sin.” I heard of two men years gone by. I knew both of them. One man said to the other, “If you would keep your mouth shut someone will think you are smart.” You can guess what the opposite is. By Pastor Curt Darling