There is that speaks like the piercings of a sword:
But the tongue of the wise is health.
We all know that the tongue can be a dangerous weapon. This proverb notes that some people use their tongue like a sword. When they open their mouth people are wounded. Sometimes this is intentional and rooted in anger, bitterness, or hatred. However, it is often rooted in selfishness as well. Self centered people use words to build themselves up but cutting other people down. This is as natural to the sinful fallen nature as learning to walk and children may be observed doing so very early.
The piercing tongue is placed in contrast with this other kind of tongue, that which brings health, or possibly that which heals where swords have pierced. We all enjoy being close to these people because they don’t make us feel threatened, attacked, or hurt in anyway. Just the opposite is true, they make us feel better. They are positive, uplifting, and edifying. They direct attention away from themselves and toward God and others. This is a wise person and a Christ like person. Strive to be that person.